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Thomas Alva Edison (February 11, 1847October 18, 1931) was an American inventor and businessman. He developed many devices in fields such as
electric power generation Electricity generation is the process of generating electric power from sources of primary energy. For utilities in the electric power industry, it is the stage prior to its delivery (transmission, distribution, etc.) to end users or its storag ...
,
mass communication Mass communication is the process of imparting and exchanging information through mass media to large segments of the population. It is usually understood for relating to various forms of media, as its technologies are used for the dissemination o ...
,
sound recording Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording te ...
, and
motion pictures A film also called a movie, motion picture, moving picture, picture, photoplay or (slang) flick is a work of visual art that simulates experiences and otherwise communicates ideas, stories, perceptions, feelings, beauty, or atmosphere ...
. These inventions, which include the
phonograph A phonograph, in its later forms also called a gramophone (as a trademark since 1887, as a generic name in the UK since 1910) or since the 1940s called a record player, or more recently a turntable, is a device for the mechanical and analogu ...
, the
motion picture camera A movie camera (also known as a film camera and cine-camera) is a type of photographic camera that rapidly takes a sequence of photographs, either on an image sensor or onto film stock, in order to produce a moving image to project onto a movie sc ...
, and early versions of the electric
light bulb An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting. Lamps usually have a base made of ceramic, metal, glass, or plastic, which secures the lamp in the soc ...
, have had a widespread impact on the modern
industrialized world A developed country (or industrialized country, high-income country, more economically developed country (MEDC), advanced country) is a sovereign state that has a high quality of life, developed economy and advanced technological infrastruct ...
. He was one of the first inventors to apply the principles of organized science and teamwork to the process of invention, working with many researchers and employees. He established the first industrial
research laboratory A research institute, research centre, research center or research organization, is an establishment founded for doing research. Research institutes may specialize in basic research or may be oriented to applied research. Although the term often im ...
. Edison was raised in the American
Midwest The Midwestern United States, also referred to as the Midwest or the American Midwest, is one of four Census Bureau Region, census regions of the United States Census Bureau (also known as "Region 2"). It occupies the northern central part of ...
. Early in his career he worked as a
telegraph operator A telegraphist (British English), telegrapher (American English), or telegraph operator is an operator who uses a telegraph key to send and receive the Morse code in order to communicate by land lines or radio. During the Great War the Royal ...
, which inspired some of his earliest inventions. In 1876, he established his first laboratory facility in
Menlo Park, New Jersey Menlo Park is an unincorporated community located within Edison Township in Middlesex County, New Jersey, United States. In 1876, Thomas Edison set up his home and research laboratory in Menlo Park, which at the time was the site of an unsucces ...
, where many of his early inventions were developed. He later established a
botanical Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ...
laboratory in
Fort Myers, Florida Fort Myers (or Ft. Myers) is a city in southwestern Florida and the county seat and commercial center of Lee County, Florida, United States. The Census Bureau's Population Estimates Program calculated that the city's population was 92,245 in 20 ...
, in collaboration with businessmen
Henry Ford Henry Ford (July 30, 1863 – April 7, 1947) was an American industrialist, business magnate, founder of the Ford Motor Company, and chief developer of the assembly line technique of mass production. By creating the first automobile that mi ...
and Harvey S. Firestone, and a laboratory in
West Orange, New Jersey West Orange is a suburban township in Essex County, in the U.S. state of New Jersey. As of the 2020 United States Census, its population was 48,843, an increase of 2,636 (+5.7%) from the 46,207 counted in the 2010 Census.
, that featured the world's first
film studio A film studio (also known as movie studio or simply studio) is a major entertainment company or motion picture company that has its own privately owned studio facility or facilities that are used to make films, which is handled by the production ...
, the
Black Maria Black Maria may refer to: Art and literature * Black Mariah (comics), a character in the Luke Cage comics series * Black Maria, a character in the manga series ''One Piece'' * ''Black Maria'' (novel), a 1991 novel by Diana Wynne Jones *''Blac ...
. With 1,093 US patents in his name, as well as patents in other countries, Edison is regarded as the most
prolific inventor The 100 known most prolific inventors based on worldwide utility patents are shown in the following table. While in many cases this is the number of utility patents granted by the United States Patent and Trademark Office, it may include utility p ...
in American history. Edison married twice and fathered six children. He died in 1931 of complications of
diabetes Diabetes, also known as diabetes mellitus, is a group of metabolic disorders characterized by a high blood sugar level ( hyperglycemia) over a prolonged period of time. Symptoms often include frequent urination, increased thirst and increased ap ...
.


Early life

Thomas Edison was born in 1847 in
Milan, Ohio Milan ( ) is a village (United States)#Ohio, village in Erie County, Ohio, Erie and Huron County, Ohio, Huron counties in the U.S. state of Ohio. The population was 1,367 at the 2010 United States Census, 2010 census. It is best known as the birt ...
, but grew up in
Port Huron, Michigan Port Huron is a city in the U.S. state of Michigan and the county seat of St. Clair County. The population was 30,184 at the 2010 census. The city is adjacent to Port Huron Township but is administered separately. Located along the St. Clair ...
, after the family moved there in 1854. He was the seventh and last child of Samuel Ogden Edison Jr. (1804–1896, born in
Marshalltown, Nova Scotia Marshalltown is a rural community located just west of Digby, There was once an almshouse and poor farm. Marshalltown was the birthplace of Samuel Ogden Edison Jr, father of Thomas Edison (1847-1931), and it was also the home of folk artist Maud L ...
) and Nancy Matthews Elliott (1810–1871, born in
Chenango County, New York Chenango County is a County (United States), county located in the south-central section U.S. state of New York (state), New York. As of the 2020 United States census, 2020 census, the population was 47,220. Its county seat is Norwich, New York ...
). His patrilineal family line was
Dutch Dutch commonly refers to: * Something of, from, or related to the Netherlands * Dutch people () * Dutch language () Dutch may also refer to: Places * Dutch, West Virginia, a community in the United States * Pennsylvania Dutch Country People E ...
by way of
New Jersey New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware ...
; the surname had originally been "Edeson". His grandfather John Edeson fled New Jersey for Nova Scotia in 1784, his father moved to Vienna, Ontario and fled after his involvement in the
Rebellion of 1837 Rebellion, uprising, or insurrection is a refusal of obedience or order. It refers to the open resistance against the orders of an established authority. A rebellion originates from a sentiment of indignation and disapproval of a situation and ...
. Edison was taught reading, writing, and arithmetic by his mother, who used to be a school teacher. He attended school for only a few months. However, one biographer described him as a very curious child who learned most things by reading on his own. As a child, he became fascinated with technology and spent hours working on experiments at home.The Near-Death Experience That Set Thomas Edison on the Road to Fame
, Barbara Maranzani, March 5, 2020
Edison developed hearing problems at the age of 12. The cause of his
deafness Deafness has varying definitions in cultural and medical contexts. In medical contexts, the meaning of deafness is hearing loss that precludes a person from understanding spoken language, an audiological condition. In this context it is written ...
has been attributed to a bout of
scarlet fever Scarlet fever, also known as Scarlatina, is an infectious disease caused by ''Streptococcus pyogenes'' a Group A streptococcus (GAS). The infection is a type of Group A streptococcal infection (Group A strep). It most commonly affects childr ...
during childhood and recurring untreated middle-ear infections. He subsequently concocted elaborate fictitious stories about the cause of his deafness. As he was completely deaf in one ear and barely hearing in the other, it is alleged that Edison would listen to a music player or piano by clamping his teeth into the wood to absorb the sound waves into his skull. As he got older, Edison believed his hearing loss allowed him to avoid distraction and concentrate more easily on his work. Modern-day historians and medical professionals have suggested he may have had
ADHD Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterised by excessive amounts of inattention, hyperactivity, and impulsivity that are pervasive, impairing in multiple contexts, and otherwise age-inapp ...
. It is known that early in his career he enrolled in a chemistry course at
The Cooper Union for the Advancement of Science and Art The Cooper Union for the Advancement of Science and Art (Cooper Union) is a private college at Cooper Square in New York City. Peter Cooper founded the institution in 1859 after learning about the government-supported École Polytechnique in ...
to support his work on a new
telegraphy Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas p ...
system with
Charles Batchelor Charles W. Batchelor (December 25, 1845 – January 1, 1910) was an inventor and close associate of American inventor Thomas Alva Edison during much of Edison's career. He was involved in some of the greatest inventions and technological developmen ...
. This appears to have been his only enrollment in courses at an institution of higher learning.


Early career

Thomas Edison began his career as a
news butcher A newspaper hawker, newsboy or newsie is a street vendor of newspapers without a fixed newsstand. Related jobs included paperboy, delivering newspapers to subscribers, and news butcher, selling papers on trains. Adults who sold newspapers from ...
, selling newspapers, candy and vegetables on the trains running from Port Huron to Detroit. He turned a $50-a-week profit by age 13, most of which went to buying equipment for electrical and chemical experiments. At age 15, in 1862, he saved 3-year-old Jimmie MacKenzie from being struck by a runaway train. Jimmie's father, station agent J. U. MacKenzie of
Mount Clemens, Michigan Mount Clemens is a city in the U.S. state of Michigan. The population was 16,314 at the 2010 United States Census, 2010 census. It is the county seat, seat of government of Macomb County, Michigan, Macomb County. History Mount Clemens was first s ...
, was so grateful that he trained Edison as a telegraph operator. Edison's first telegraphy job away from Port Huron was at Stratford Junction, Ontario, on the
Grand Trunk Railway The Grand Trunk Railway (; french: Grand Tronc) was a railway system that operated in the Canadian provinces of Quebec and Ontario and in the American states of Connecticut, Maine, Michigan, Massachusetts, New Hampshire, and Vermont. The rai ...
. He also studied qualitative analysis and conducted chemical experiments until he left the job rather than be fired after being held responsible for a near collision of two trains. Edison obtained the exclusive right to sell newspapers on the road, and, with the aid of four assistants, he set in type and printed the ''Grand Trunk Herald'', which he sold with his other papers. This began Edison's long streak of entrepreneurial ventures, as he discovered his talents as a businessman. Ultimately, his entrepreneurship was central to the formation of some 14 companies, including
General Electric General Electric Company (GE) is an American multinational conglomerate founded in 1892, and incorporated in New York state and headquartered in Boston. The company operated in sectors including healthcare, aviation, power, renewable energ ...
, formerly one of the largest
publicly traded companies A public company is a company whose ownership is organized via shares of stock which are intended to be freely traded on a stock exchange or in over-the-counter markets. A public (publicly traded) company can be listed on a stock exchange (l ...
in the world. In 1866, at the age of 19, Edison moved to
Louisville, Kentucky Louisville ( , , ) is the largest city in the Commonwealth of Kentucky and the 28th most-populous city in the United States. Louisville is the historical seat and, since 2003, the nominal seat of Jefferson County, on the Indiana border ...
, where, as an employee of
Western Union The Western Union Company is an American multinational financial services company, headquartered in Denver, Colorado. Founded in 1851 as the New York and Mississippi Valley Printing Telegraph Company in Rochester, New York, the company chang ...
, he worked the
Associated Press The Associated Press (AP) is an American non-profit news agency headquartered in New York City. Founded in 1846, it operates as a cooperative, unincorporated association. It produces news reports that are distributed to its members, U.S. newspa ...
bureau
news wire A news agency is an organization that gathers news reports and sells them to subscribing news organizations, such as newspapers, magazines and radio and television broadcasters. A news agency may also be referred to as a wire service, newswire, ...
. Edison requested the night shift, which allowed him plenty of time to spend at his two favorite pastimes—reading and experimenting. Eventually, the latter pre-occupation cost him his job. One night in 1867, he was working with a
lead–acid battery The lead–acid battery is a type of rechargeable battery first invented in 1859 by French physicist Gaston Planté. It is the first type of rechargeable battery ever created. Compared to modern rechargeable batteries, lead–acid batteries have ...
when he spilt
sulfuric acid Sulfuric acid (American spelling and the preferred IUPAC name) or sulphuric acid ( Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with the molecular formu ...
onto the floor. It ran between the floorboards and onto his boss's desk below. The next morning Edison was fired. His first patent was for the electric vote recorder, , which was granted on June 1, 1869. Finding little demand for the machine, Edison moved to New York City shortly thereafter. One of his mentors during those early years was a fellow telegrapher and inventor named
Franklin Leonard Pope Franklin Leonard Pope (2 December 1840 – 13 October 1895) was an American engineer, explorer, and inventor. Biography He was born in Great Barrington, Massachusetts in December 1840 , the son of Ebenezer Pope and Electra Wainwright. He was ...
, who allowed the impoverished youth to live and work in the basement of his
Elizabeth, New Jersey Elizabeth is a city and the county seat of Union County, in the U.S. state of New Jersey.New J ...
, home, while Edison worked for Samuel Laws at the Gold Indicator Company. Pope and Edison founded their own company in October 1869, working as electrical engineers and inventors. Edison began developing a
multiplex Multiplex may refer to: * Multiplex (automobile), a former American car make * Multiplex (comics), a DC comic book supervillain * Multiplex (company), a global contracting and development company * Multiplex (assay), a biological assay which measu ...
telegraphic system, which could send two messages simultaneously, in 1874.


Menlo Park laboratory (1876–1886)


Research and development facility

Edison's major innovation was the establishment of an industrial research lab in 1876. It was built in Menlo Park, a part of Raritan Township (now named Edison Township in his honor) in Middlesex County, New Jersey, with the funds from the sale of Edison's
quadruplex telegraph The Quadruplex telegraph is a type of electrical telegraph which allows a total of four separate signals to be transmitted and received on a single wire at the same time (two signals in each direction). Quadruplex telegraphy thus implements a fo ...
. After his demonstration of the telegraph, Edison was not sure that his original plan to sell it for $4,000 to $5,000 was right, so he asked Western Union to make a bid. He was surprised to hear them offer $10,000 ($ in today's dollars), which he gratefully accepted. The quadruplex telegraph was Edison's first big financial success, and Menlo Park became the first institution set up with the specific purpose of producing constant technological innovation and improvement. Edison was legally credited with most of the inventions produced there, though many employees carried out research and development under his direction. His staff was generally told to carry out his directions in conducting research, and he drove them hard to produce results.
William Joseph Hammer William Joseph Hammer (February 26, 1858 – March 24, 1934) was an American pioneer electrical engineer, aviator, and president of the Edison Pioneers. Biography He was born in Cressona, Pennsylvania on February 26, 1858 to William Hammer (1827 ...
, a consulting electrical engineer, started working for Edison and began his duties as a laboratory assistant in December 1879. He assisted in experiments on the telephone, phonograph, electric railway, iron ore separator,
electric lighting An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting. Lamps usually have a base made of ceramic, metal, glass, or plastic, which secures the lamp in the soc ...
, and other developing inventions. However, Hammer worked primarily on the incandescent electric lamp and was put in charge of tests and records on that device (see
Hammer Historical Collection of Incandescent Electric Lamps The Hammer Historical Collection of Incandescent Electric Lamps (titled "The History of an Art") was an exhibit of early electric light bulbs and was collected by William Joseph Hammer. The collection of lamp bulbs is the most comprehensive kno ...
). In 1880, he was appointed chief engineer of the Edison Lamp Works. In his first year, the plant under general manager
Francis Robbins Upton Francis Robbins Upton (1852 in Peabody, Massachusetts – March 10, 1921 in Orange, New Jersey) was an American physicist and mathematician. Upton worked alongside Thomas Edison in the development of incandescent light bulbs, electric generators, ...
turned out 50,000 lamps. According to Edison, Hammer was "a pioneer of incandescent electric lighting".
Frank J. Sprague Frank Julian Sprague (July 25, 1857 in Milford, Connecticut – October 25, 1934) was an American inventor who contributed to the development of the electric motor, electric railways, and electric elevators. His contributions were especially ...
, a competent mathematician and former
naval officer An officer is a person who holds a position of authority as a member of an armed force or uniformed service. Broadly speaking, "officer" means a commissioned officer, a non-commissioned officer, or a warrant officer. However, absent context ...
, was recruited by
Edward H. Johnson Edward Hibberd Johnson (January 4, 1846 – September 9, 1917) was an inventor and business associate of American inventor Thomas Alva Edison. He was involved in many of Edison's projects, and was a partner in an early organization which evolved i ...
and joined the Edison organization in 1883. One of Sprague's contributions to the Edison Laboratory at Menlo Park was to expand Edison's mathematical methods. Despite the common belief that Edison did not use mathematics, analysis of his notebooks reveal that he was an astute user of mathematical analysis conducted by his assistants such as Francis Robbins Upton, for example, determining the critical parameters of his electric lighting system including lamp resistance by an analysis of
Ohm's Law Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points. Introducing the constant of proportionality, the resistance, one arrives at the usual mathematical equat ...
,
Joule's Law Joule effect and Joule's law are any of several different physical effects discovered or characterized by English physicist James Prescott Joule. These physical effects are not the same, but all are frequently or occasionally referred to in the lite ...
and economics. Nearly all of Edison's patents were utility patents, which were protected for 17 years and included inventions or processes that are electrical, mechanical, or chemical in nature. About a dozen were
design patent In the United States, a design patent is a form of legal protection granted to the ornamental design of an article of manufacture. Design patents are a type of industrial design right. Ornamental designs of jewelry, furniture, beverage containers ...
s, which protect an ornamental design for up to 14 years. As in most patents, the inventions he described were improvements over
prior art Prior art (also known as state of the art or background art) is a concept in patent law used to determine the patentability of an invention, in particular whether an invention meets the novelty and the inventive step or non-obviousness criteria ...
. The phonograph patent, in contrast, was unprecedented in describing the first device to record and reproduce sounds. In just over a decade, Edison's Menlo Park laboratory had expanded to occupy two city blocks. Edison said he wanted the lab to have "a stock of almost every conceivable material". A newspaper article printed in 1887 reveals the seriousness of his claim, stating the lab contained "eight thousand kinds of chemicals, every kind of screw made, every size of needle, every kind of cord or wire, hair of humans, horses, hogs, cows, rabbits, goats, minx, camels ... silk in every texture, cocoons, various kinds of hoofs, shark's teeth, deer horns, tortoise shell ... cork, resin, varnish and oil, ostrich feathers, a peacock's tail, jet, amber, rubber, all ores ..." and the list goes on. Over his desk Edison displayed a placard with
Sir Joshua Reynolds Sir Joshua Reynolds (16 July 1723 – 23 February 1792) was an English painter, specialising in portraits. John Russell said he was one of the major European painters of the 18th century. He promoted the "Grand Style" in painting which depend ...
' famous quotation: "There is no expedient to which a man will not resort to avoid the real labor of thinking." This slogan was reputedly posted at several other locations throughout the facility. In Menlo Park, Edison had created the first industrial laboratory concerned with creating knowledge and then controlling its application. Edison's name is registered on 1,093 patents.


Phonograph

Edison began his career as an inventor in
Newark, New Jersey Newark ( , ) is the most populous city in the U.S. state of New Jersey and the seat of Essex County and the second largest city within the New York metropolitan area.phonograph A phonograph, in its later forms also called a gramophone (as a trademark since 1887, as a generic name in the UK since 1910) or since the 1940s called a record player, or more recently a turntable, is a device for the mechanical and analogu ...
in 1877. This accomplishment was so unexpected by the public at large as to appear almost magical. Edison became known as "The Wizard of Menlo Park". His first phonograph recorded on
tinfoil Tin foil, also spelled tinfoil, is a thin foil made of tin. Tin foil was superseded after World War II by cheaper and more durable aluminium foil, which is still referred to as "tin foil" in many regions (an example of a misnomer). History F ...
around a grooved cylinder. Despite its limited
sound quality Sound quality is typically an assessment of the accuracy, fidelity, or intelligibility of audio output from an electronic device. Quality can be measured objectively, such as when tools are used to gauge the accuracy with which the device re ...
and that the recordings could be played only a few times, the phonograph made Edison a celebrity.
Joseph Henry Joseph Henry (December 17, 1797– May 13, 1878) was an American scientist who served as the first Secretary of the Smithsonian Institution. He was the secretary for the National Institute for the Promotion of Science, a precursor of the Smith ...
, president of the National Academy of Sciences and one of the most renowned electrical scientists in the US, described Edison as "the most ingenious inventor in this country... or in any other". In April 1878, Edison traveled to Washington to demonstrate the phonograph before the National Academy of Sciences, Congressmen, Senators and US President Hayes. ''
The Washington Post ''The Washington Post'' (also known as the ''Post'' and, informally, ''WaPo'') is an American daily newspaper published in Washington, D.C. It is the most widely circulated newspaper within the Washington metropolitan area and has a large nati ...
'' described Edison as a "
genius Genius is a characteristic of original and exceptional insight in the performance of some art or endeavor that surpasses expectations, sets new standards for future works, establishes better methods of operation, or remains outside the capabiliti ...
" and his presentation as "a scene... that will live in history". Although Edison obtained a patent for the phonograph in 1878, he did little to develop it until
Alexander Graham Bell Alexander Graham Bell (, born Alexander Bell; March 3, 1847 – August 2, 1922) was a Scottish-born inventor, scientist and engineer who is credited with patenting the first practical telephone. He also co-founded the American Telephone and Te ...
,
Chichester Bell Chichester Alexander Bell (1848–1924) was an American chemist and inventor. He was a first cousin of Alexander Graham Bell, and instrumental in developing improved versions of the phonograph.American History MuseumCharles Sumner Tainter Papers, ...
, and Charles Tainter produced a phonograph-like device in the 1880s that used wax-coated cardboard cylinders.


Carbon telephone transmitter

In 1876, Edison began work to improve the
microphone A microphone, colloquially called a mic or mike (), is a transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones, hearing aids, public address systems for concert halls and public ...
for telephones (at that time called a "transmitter") by developing a
carbon microphone The carbon microphone, also known as carbon button microphone, button microphone, or carbon transmitter, is a type of microphone, a transducer that converts sound to an electrical audio signal. It consists of two metal plates separated by granu ...
, which consists of two metal plates separated by granules of carbon that would change resistance with the pressure of sound waves. A steady direct current is passed between the plates through the granules and the varying resistance results in a modulation of the current, creating a varying electric current that reproduces the varying pressure of the sound wave. Up to that point, microphones, such as the ones developed by
Johann Philipp Reis Johann Philipp Reis (; 7 January 1834 – 14 January 1874) was a self-taught German scientist and inventor. In 1861, he constructed the first ''make-and-break'' telephone, today called the Reis telephone. Early life and education Reis ...
and
Alexander Graham Bell Alexander Graham Bell (, born Alexander Bell; March 3, 1847 – August 2, 1922) was a Scottish-born inventor, scientist and engineer who is credited with patenting the first practical telephone. He also co-founded the American Telephone and Te ...
, worked by generating a weak current. The
carbon microphone The carbon microphone, also known as carbon button microphone, button microphone, or carbon transmitter, is a type of microphone, a transducer that converts sound to an electrical audio signal. It consists of two metal plates separated by granu ...
works by modulating a direct current and, subsequently, using a transformer to transfer the signal so generated to the telephone line. Edison was one of many inventors working on the problem of creating a usable microphone for telephony by having it modulate an electrical current passed through it.Adrian Hope, 100 Years of Microphone, New Scientist May 11, 1978, Vol. 78, No. 1102, p. 378 His work was concurrent with
Emile Berliner Emile Berliner (May 20, 1851 – August 3, 1929) originally Emil Berliner, was a German-American inventor. He is best known for inventing the lateral-cut flat disc record (called a "gramophone record" in British and American English) used with a ...
's loose-contact carbon transmitter (who lost a later patent case against Edison over the carbon transmitter's invention''IEEE Global History Network: Carbon Transmitter''. New Brunswick, NJ: IEEE History Center ) and
David Edward Hughes David Edward Hughes (16 May 1830 – 22 January 1900), was a British-American inventor, practical experimenter, and professor of music known for his work on the printing telegraph and the microphone. He is generally considered to have bee ...
study and published paper on the physics of loose-contact carbon transmitters (work that Hughes did not bother to patent). Edison used the carbon microphone concept in 1877 to create an improved telephone for
Western Union The Western Union Company is an American multinational financial services company, headquartered in Denver, Colorado. Founded in 1851 as the New York and Mississippi Valley Printing Telegraph Company in Rochester, New York, the company chang ...
. In 1886, Edison found a way to improve a
Bell Telephone The Bell System was a system of telecommunication companies, led by the Bell Telephone Company and later by the American Telephone and Telegraph Company (AT&T), that dominated the telephone services industry in North America for over one hundre ...
microphone, one that used loose-contact ground carbon, with his discovery that it worked far better if the carbon was
roasted Roasting is a cooking method that uses dry heat where hot air covers the food, cooking it evenly on all sides with temperatures of at least from an open flame, oven, or other heat source. Roasting can enhance the flavor through caramelizatio ...
. This type was put in use in 1890 and was used in all telephones along with the Bell receiver until the 1980s.


Electric light

In 1878, Edison began working on a system of electrical illumination, something he hoped could compete with gas and oil-based lighting. He began by tackling the problem of creating a long-lasting incandescent lamp, something that would be needed for indoor use. However, Thomas Edison did not invent the light bulb. In 1840, British scientist Warren de la Rue developed an efficient light bulb using a coiled platinum filament but the high cost of platinum kept the bulb from becoming a commercial success. Many other inventors had also devised incandescent lamps, including
Alessandro Volta Alessandro Giuseppe Antonio Anastasio Volta (, ; 18 February 1745 – 5 March 1827) was an Italian physicist, chemist and lay Catholic who was a pioneer of electricity and power who is credited as the inventor of the electric battery and the ...
's demonstration of a glowing wire in 1800 and inventions by Henry Woodward and
Mathew Evans Matthew Evans is one of two Canadians who developed and patented an incandescent light bulb, on July 24, 1874, five years before Thomas Alva Edison's U.S. patent on the device. Evans, from Toronto, Ontario Ontario ( ; ) is one of the thirte ...
. Others who developed early and commercially impractical incandescent electric lamps included
Humphry Davy Sir Humphry Davy, 1st Baronet, (17 December 177829 May 1829) was a British chemist and inventor who invented the Davy lamp and a very early form of arc lamp. He is also remembered for isolating, by using electricity, several elements for t ...
, James Bowman Lindsay,
Moses G. Farmer Moses Gerrish Farmer (February 9, 1820 – May 25, 1893) was an electrical engineer and inventor. Farmer was a member to the AIEE, later known as the IEEE. Biography Farmer was born at Boscawen, New Hampshire. He received his schooling at Philli ...
, William E. Sawyer,
Joseph Swan Sir Joseph Wilson Swan FRS (31 October 1828 – 27 May 1914) was an English physicist, chemist, and inventor. He is known as an independent early developer of a successful incandescent light bulb, and is the person responsible for develop ...
, and
Heinrich Göbel Heinrich Göbel, or Henry Goebel (April 20, 1818 – December 4, 1893) was a German-born American precision mechanic and inventor. In 1848 he emigrated to New York City, where he resided until his death. He received American citizenship in 1865. ...
. These early bulbs all had flaws such as an extremely short life and requiring a high
electric current An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume. The moving pa ...
to operate which made them difficult to apply on a large scale commercially. In his first attempts to solve these problems, Edison tried using a filament made of cardboard, carbonized with compressed lampblack. This burnt out too quickly to provide lasting light. He then experimented with different grasses and canes such as hemp, and palmetto, before settling on bamboo as the best filament. Edison continued trying to improve this design and on November 4, 1879, filed for U.S. patent 223,898 (granted on January 27, 1880) for an electric lamp using "a carbon filament or strip coiled and connected to platina contact wires". The patent described several ways of creating the carbon filament including "cotton and linen thread, wood splints, papers coiled in various ways". It was not until several months after the patent was granted that Edison and his team discovered that a
carbonize Carbonization is the conversion of organic matters like plants and dead animal remains into carbon through destructive distillation. Complexity in carbonization Carbonization is a pyrolytic reaction, therefore, is considered a complex process ...
d
bamboo Bamboos are a diverse group of evergreen perennial flowering plants making up the subfamily Bambusoideae of the grass family Poaceae. Giant bamboos are the largest members of the grass family. The origin of the word "bamboo" is uncertain, bu ...
filament could last over 1,200 hours. In 1878, Edison formed the
Edison Electric Light Company General Electric Company (GE) is an American multinational conglomerate founded in 1892, and incorporated in New York state and headquartered in Boston. The company operated in sectors including healthcare, aviation, power, renewable energy ...
in New York City with several financiers, including
J. P. Morgan John Pierpont Morgan Sr. (April 17, 1837 – March 31, 1913) was an American financier and investment banker who dominated corporate finance on Wall Street throughout the Gilded Age. As the head of the banking firm that ultimately became known ...
,
Spencer Trask Spencer Trask (September 18, 1844 – December 31, 1909) was an American financier, philanthropist, and venture capitalist. Beginning in the 1870s, Trask began investing and supporting entrepreneurs, including Thomas Edison's invention of the ele ...
, and the members of the
Vanderbilt family The Vanderbilt family is an American family who gained prominence during the Gilded Age. Their success began with the shipping and railroad empires of Cornelius Vanderbilt, and the family expanded into various other areas of industry and philanthr ...
. Edison made the first public demonstration of his incandescent light bulb on December 31, 1879, in Menlo Park. It was during this time that he said: "We will make electricity so cheap that only the rich will burn candles."
Henry Villard Henry Villard (April 10, 1835 – November 12, 1900) was an American journalist and financier who was an early president of the Northern Pacific Railway. Born and raised by Ferdinand Heinrich Gustav Hilgard in the Rhenish Palatinate of the Kin ...
, president of the
Oregon Railroad and Navigation Company The Oregon Railroad and Navigation Company (OR&N) was a railroad that operated a rail network of running east from Portland, Oregon, United States, to northeastern Oregon, northeastern Washington, and northern Idaho. It operated from 1896 as a ...
, attended Edison's 1879 demonstration. Villard was impressed and requested Edison install his electric lighting system aboard Villard's company's new steamer, the ''Columbia''. Although hesitant at first, Edison agreed to Villard's request. Most of the work was completed in May 1880, and the ''Columbia'' went to New York City, where Edison and his personnel installed ''Columbia'' new lighting system. The ''Columbia'' was Edison's first commercial application for his incandescent light bulb. The Edison equipment was removed from ''Columbia'' in 1895.Dalton, Anthon
A long, dangerous coastline: shipwreck tales from Alaska to California
Heritage House Publishing Company, February 1, 2011 – 128 pp.
In 1880, Lewis Latimer, a draftsman and an expert witness in patent litigation, began working for the United States Electric Lighting Company run by Edison's rival Hiram S. Maxim. While working for Maxim, Latimer invented a process for making carbon filaments for light bulbs and helped install broad-scale lighting systems for New York City, Philadelphia, Montreal, and London. Latimer holds the patent for the electric lamp issued in 1881, and a second patent for the "process of manufacturing carbons" (the filament used in incandescent light bulbs), issued in 1882. On October 8, 1883, the
US patent office The United States Patent and Trademark Office (USPTO) is an agency in the U.S. Department of Commerce that serves as the national patent office and trademark registration authority for the United States. The USPTO's headquarters are in Alexa ...
ruled that Edison's patent was based on the work of William E. Sawyer and was, therefore, invalid. Litigation continued for nearly six years. In 1885, Latimer switched camps and started working with Edison. On October 6, 1889, a judge ruled that Edison's electric light improvement claim for "a filament of carbon of high resistance" was valid. To avoid a possible court battle with yet another competitor,
Joseph Swan Sir Joseph Wilson Swan FRS (31 October 1828 – 27 May 1914) was an English physicist, chemist, and inventor. He is known as an independent early developer of a successful incandescent light bulb, and is the person responsible for develop ...
, whose British patent had been awarded a year before Edison's, he and Swan formed a joint company called Ediswan to manufacture and market the invention in Britain. The incandescent light bulb patented by Edison also began to gain widespread popularity in Europe as well.
Mahen Theatre Mahen Theatre ( cs, Mahenovo divadlo) is a Czech theatre situated in the city of Brno. Mahen Theatre, built as German ''Deutsches Stadttheater'' in 1882, was one of the first public buildings in the world lit entirely by electric light. Ort (200 ...
in
Brno Brno ( , ; german: Brünn ) is a city in the South Moravian Region of the Czech Republic. Located at the confluence of the Svitava and Svratka rivers, Brno has about 380,000 inhabitants, making it the second-largest city in the Czech Republic ...
(in what is now the Czech Republic), opened in 1882, and was the first public building in the world to use Edison's electric lamps.
Francis Jehl Francis Jehl (September 6, 1860 - February 11, 1941) was a laboratory assistant of Thomas Edison. Jehl studied chemistry at Cooper Union at night. After finishing school at the age of 18, he went to work for Edison at Menlo Park. In 1882, Jehl we ...
, Edison's assistant in the invention of the lamp, supervised the installation. In September 2010, a sculpture of three giant light bulbs was erected in Brno, in front of the theater. The first Edison light bulbs in the
Nordic countries The Nordic countries (also known as the Nordics or ''Norden''; literal translation, lit. 'the North') are a geographical and cultural region in Northern Europe and the Atlantic Ocean, North Atlantic. It includes the sovereign states of Denmar ...
were installed at the weaving hall of the Finlayson's textile factory in Tampere, Finland in March 1882.


Electric power distribution

After devising a commercially viable electric light bulb on October 21, 1879, Edison developed an electric "
utility As a topic of economics, utility is used to model worth or value. Its usage has evolved significantly over time. The term was introduced initially as a measure of pleasure or happiness as part of the theory of utilitarianism by moral philosopher ...
" to compete with the existing gas light utilities. On December 17, 1880, he founded the
Edison Illuminating Company The Edison Illuminating Company was established by Thomas Edison on December 17, 1880, to construct electrical generating stations, initially in New York City. The company was the prototype for other local illuminating companies that were establis ...
, and during the 1880s, he patented a system for
electricity distribution Electric power distribution is the final stage in the delivery of electric power; it carries electricity from the transmission system to individual consumers. Distribution substations connect to the transmission system and lower the transmissio ...
. The company established the first investor-owned electric utility in 1882 on
Pearl Street Station Pearl Street Station was the first commercial central power plant in the United States. It was located at 255–257 Pearl Street in the Financial District of Manhattan, New York City, just south of Fulton Street on a site measuring . The statio ...
, New York City. On September 4, 1882, Edison switched on his Pearl Street generating station's electrical power distribution system, which provided 110 volts
direct current Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even ...
(DC) to 59 customers in lower
Manhattan Manhattan (), known regionally as the City, is the most densely populated and geographically smallest of the five boroughs of New York City. The borough is also coextensive with New York County, one of the original counties of the U.S. state ...
. In January 1882, Edison switched on the first steam-generating power station at
Holborn Viaduct Holborn Viaduct is a road bridge in London and the name of the street which crosses it (which forms part of the A40 route). It links Holborn, via Holborn Circus, with Newgate Street, in the City of London financial district, passing over ...
in London. The DC supply system provided electricity supplies to street lamps and several private dwellings within a short distance of the station. On January 19, 1883, the first standardized incandescent electric lighting system employing
overhead wires An overhead line or overhead wire is an electrical cable that is used to transmit electrical energy to electric locomotives, trolleybuses or trams. It is known variously as: * Overhead catenary * Overhead contact system (OCS) * Overhead equipment ...
began service in Roselle, New Jersey.


War of currents

As Edison expanded his
direct current Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even ...
(DC) power delivery system, he received stiff competition from companies installing
alternating current Alternating current (AC) is an electric current which periodically reverses direction and changes its magnitude continuously with time in contrast to direct current (DC) which flows only in one direction. Alternating current is the form in whic ...
(AC) systems. From the early 1880s, AC arc lighting systems for streets and large spaces had been an expanding business in the US. With the development of
transformer A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer' ...
s in Europe and by
Westinghouse Electric The Westinghouse Electric Corporation was an American manufacturing company founded in 1886 by George Westinghouse. It was originally named "Westinghouse Electric & Manufacturing Company" and was renamed "Westinghouse Electric Corporation" in ...
in the US in 1885–1886, it became possible to transmit AC long distances over thinner and cheaper wires, and "step down" (reduce) the voltage at the destination for distribution to users. This allowed AC to be used in street lighting and in lighting for small business and domestic customers, the market Edison's patented low voltage DC incandescent lamp system was designed to supply. Edison's DC empire suffered from one of its chief drawbacks: it was suitable only for the high density of customers found in large cities. Edison's DC plants could not deliver electricity to customers more than one mile from the plant, and left a patchwork of unsupplied customers between plants. Small cities and rural areas could not afford an Edison style system at all, leaving a large part of the market without electrical service. AC companies expanded into this gap. Edison expressed views that AC was unworkable and the high voltages used were dangerous. As
George Westinghouse George Westinghouse Jr. (October 6, 1846 – March 12, 1914) was an American entrepreneur and engineer based in Pennsylvania who created the railway air brake and was a pioneer of the electrical industry, receiving his first patent at the age ...
installed his first AC systems in 1886, Thomas Edison struck out personally against his chief rival stating, "''Just as certain as death, Westinghouse will kill a customer within six months after he puts in a system of any size. He has got a new thing and it will require a great deal of experimenting to get it working practically.''" Many reasons have been suggested for Edison's anti-AC stance. One notion is that the inventor could not grasp the more abstract theories behind AC and was trying to avoid developing a system he did not understand. Edison also appeared to have been worried about the high voltage from misinstalled AC systems killing customers and hurting the sales of electric power systems in general. Primary was the fact that Edison Electric based their design on low voltage DC and switching a standard after they had installed over 100 systems was, in Edison's mind, out of the question. By the end of 1887, Edison Electric was losing market share to Westinghouse, who had built 68 AC-based power stations to Edison's 121 DC-based stations. To make matters worse for Edison, the
Thomson-Houston Electric Company The Thomson-Houston Electric Company was a manufacturing company which was one of the precursors of the General Electric company. History The Thomson-Houston Electric Company was formed in 1882 in the United States when a group of Lynn, Massa ...
of Lynn, Massachusetts (another AC-based competitor) built 22 power stations. Parallel to expanding competition between Edison and the AC companies was rising public furor over a series of deaths in the spring of 1888 caused by pole mounted high voltage alternating current lines. This turned into a media frenzy against high voltage alternating current and the seemingly greedy and callous lighting companies that used it. Edison took advantage of the public perception of AC as dangerous, and joined with self-styled New York anti-AC crusader
Harold P. Brown Harold Pitney Brown (September 16, 1857, Janesville, Wisconsin – 1944 Volusia, Florida) was an American electrical engineer and inventor known for his activism in the late 1880s against the use of alternating current (AC) for electric ...
in a propaganda campaign, aiding Brown in the public electrocution of animals with AC, and supported legislation to control and severely limit AC installations and voltages (to the point of making it an ineffective power delivery system) in what was now being referred to as a "battle of currents". The development of the
electric chair An electric chair is a device used to execute an individual by electrocution. When used, the condemned person is strapped to a specially built wooden chair and electrocuted through electrodes fastened on the head and leg. This execution method, ...
was used in an attempt to portray AC as having a greater lethal potential than DC and smear Westinghouse at the same time via Edison colluding with Brown and Westinghouse's chief AC rival, the Thomson-Houston Electric Company, to make sure the first electric chair was powered by a Westinghouse AC generator. Thomas Edison's staunch anti-AC tactics were not sitting well with his own stockholders. By the early 1890s, Edison's company was generating much smaller profits than its AC rivals, and the War of Currents would come to an end in 1892 with Edison forced out of controlling his own company. That year, the financier J.P. Morgan engineered a merger of Edison General Electric with Thomson-Houston that put the board of Thomson-Houston in charge of the new company called
General Electric General Electric Company (GE) is an American multinational conglomerate founded in 1892, and incorporated in New York state and headquartered in Boston. The company operated in sectors including healthcare, aviation, power, renewable energ ...
. General Electric now controlled three-quarters of the US electrical business and would compete with Westinghouse for the AC market.


West Orange and Fort Myers (1886–1931)

Edison moved from Menlo Park after the death of his first wife, Mary, in 1884, and purchased a home known as " Glenmont" in 1886 as a wedding gift for his second wife, Mina, in
Llewellyn Park Llewellyn Park is a neighborhood in West Orange in Essex County, New Jersey, United States. It is a gated residential community of 175 homes, west of New York City. History Llewellyn Park was founded in 1853 by Llewellyn Solomon Haskell, ...
in
West Orange, New Jersey West Orange is a suburban township in Essex County, in the U.S. state of New Jersey. As of the 2020 United States Census, its population was 48,843, an increase of 2,636 (+5.7%) from the 46,207 counted in the 2010 Census.
. In 1885, Thomas Edison bought 13 acres of property in
Fort Myers Fort Myers (or Ft. Myers) is a city in southwestern Florida and the county seat and commercial center of Lee County, Florida, United States. The Census Bureau's Population Estimates Program calculated that the city's population was 92,245 in 20 ...
, Florida, for roughly $2,750 () and built what was later called Seminole Lodge as a winter retreat. The main house and guest house are representative of
Italianate architecture The Italianate style was a distinct 19th-century phase in the history of Classical architecture. Like Palladianism and Neoclassicism, the Italianate style drew its inspiration from the models and architectural vocabulary of 16th-century Italian R ...
and
Queen Anne style architecture The Queen Anne style of British architecture refers to either the English Baroque architecture of the time of Queen Anne (who reigned from 1702 to 1714) or the British Queen Anne Revival form that became popular during the last quarter of the ...
. The building materials were pre-cut in New England by the Kennebec Framing Company and the Stephen Nye Lumber Company of Fairfield Maine. The materials were then shipped down by boat and were constructed at a cost of $12,000 each, which included the cost of interior furnishings. Edison and Mina spent many winters at their home in Fort Myers, and Edison tried to find a domestic source of natural rubber. Due to the security concerns around
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
, Edison suggested forming a science and industry committee to provide advice and research to the US military, and he headed the
Naval Consulting Board The Naval Consulting Board, also known as the Naval Advisory Board (a name used in the 1880s for two previous committees), was a US Navy organization established in 1915 by Josephus Daniels, the Secretary of the Navy at the suggestion of Thomas A ...
in 1915. Edison became concerned with America's reliance on foreign supply of rubber and was determined to find a native supply of rubber. Edison's work on rubber took place largely at his research laboratory in Fort Myers, which has been designated as a National Historic Chemical Landmark. The laboratory was built after Thomas Edison, Henry Ford, and Harvey Firestone pulled together $75,000 to form the Edison Botanical Research Corporation. Initially, only Ford and Firestone were to contribute funds to the project, while Edison did all the research. Edison, however, wished to contribute $25,000 as well. Edison did the majority of the research and planting, sending results and sample rubber residues to his West Orange Lab. Edison employed a two-part Acid-base extraction, to derive latex from the plant material after it was dried and crushed to a powder. After testing 17,000 plant samples, he eventually found an adequate source in the Goldenrod plant. Edison decided on ''
Solidago leavenworthii ''Solidago leavenworthii'', or Leavenworth's goldenrod, is North American species of herbaceous perennial plants of the family Asteraceae. It is native to southeastern United States from Florida north to Georgia Georgia most commonly refers to ...
'', also known as Leavenworth's Goldenrod. The plant, which normally grows roughly 3–4 feet tall with a 5% latex yield, was adapted by Edison through cross-breeding to produce plants twice the size and with a latex yield of 12%. During the 1911 New York Electrical show, Edison told representatives of the copper industry it was a shame he didn't have a "chunk of it". The representatives decided to give a cubic foot of solid copper weighing 486 pounds with their gratitude inscribed on it in appreciation for his part in the "continuous stimulation in the copper industry".


Other inventions and projects


Fluoroscopy

Edison is credited with designing and producing the first commercially available
fluoroscope Fluoroscopy () is an imaging technique that uses X-rays to obtain real-time moving images of the interior of an object. In its primary application of medical imaging Medical imaging is the technique and process of imaging the interior of a ...
, a machine that uses
X-rays An X-ray, or, much less commonly, X-radiation, is a penetrating form of high-energy electromagnetic radiation. Most X-rays have a wavelength ranging from 10 Picometre, picometers to 10 Nanometre, nanometers, corresponding to frequency, ...
to take
radiographs Radiography is an imaging technique using X-rays, gamma rays, or similar ionizing radiation and non-ionizing radiation to view the internal form of an object. Applications of radiography include medical radiography ("diagnostic" and "therapeut ...
. Until Edison discovered that
calcium tungstate Scheelite is a calcium tungstate mineral with the chemical formula Ca W O4. It is an important ore of tungsten (wolfram). Scheelite is originally named after Swedish chemist K. Scheele (1742-1786). Well-formed crystals are sought by collectors ...
fluoroscopy screens produced brighter images than the barium
platinocyanide Platinocyanide, also known as tetracyanoplatinate (IUPAC), cyanoplatinate, or platinocyanate, is a polyatomic ion with the molecular formula t(CN)4sup>2−. The name also applies to compounds containing this ion, which are salts of the hypothetical ...
screens originally used by
Wilhelm Röntgen Wilhelm Conrad Röntgen (; ; 27 March 184510 February 1923) was a German mechanical engineer and physicist, who, on 8 November 1895, produced and detected electromagnetic radiation in a wavelength range known as X-rays or Röntgen rays, an achiev ...
, the technology was capable of producing only very faint images. The fundamental design of Edison's fluoroscope is still in use today, although Edison abandoned the project after nearly losing his own eyesight and seriously injuring his assistant, Clarence Dally. Dally made himself an enthusiastic human guinea pig for the fluoroscopy project and was exposed to a poisonous dose of radiation; he later died (at the age of 39) of injuries related to the exposure, mediastinal cancer. In 1903, a shaken Edison said: "Don't talk to me about X-rays, I am afraid of them." Nonetheless, his work was important in the development of a technology still used today.


Tasimeter

Edison invented a highly sensitive device, that he named the
tasimeter The tasimeter, or microtasimeter, or ''measurer of infinitesimal pressure'', is a device designed by Thomas Edison to measure infrared radiation. In 1878, Samuel Langley, Henry Draper, and other American scientists needed a highly sensitive in ...
, which measured
infrared radiation Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from around ...
. His impetus for its creation was the desire to measure the heat from the
solar corona A corona ( coronas or coronae) is the outermost layer of a star's atmosphere. It consists of plasma. The Sun's corona lies above the chromosphere and extends millions of kilometres into outer space. It is most easily seen during a total solar ...
during the total
Solar eclipse of July 29, 1878 A total solar eclipse occurred on July 29, 1878, over much of North America including the region of the Rocky Mountains. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the ...
. The device was not patented since Edison could find no practical mass-market application for it.


Telegraph improvements

The key to Edison's initial reputation and success was his work in the field of telegraphy. With knowledge gained from years of working as a telegraph operator, he learned the basics of electricity. This, together with his studies in chemistry at the
Cooper Union The Cooper Union for the Advancement of Science and Art (Cooper Union) is a private college at Cooper Square in New York City. Peter Cooper founded the institution in 1859 after learning about the government-supported École Polytechnique in ...
, allowed him to make his early fortune with the stock ticker, the first electricity-based broadcast system. His innovations also included the development of the quadruplex, the first system which could simultaneously transmit four messages through a single wire.


Motion pictures

Edison was granted a patent for a motion picture camera, labeled the "Kinetograph". He did the electromechanical design while his employee
William Kennedy Dickson William Kennedy Laurie Dickson (3 August 1860 – 28 September 1935) was a British people, British inventor who devised an early motion picture camera under the employment of Thomas Edison. Early life William Kennedy Dickson was born on 3 ...
, a photographer, worked on the photographic and optical development. Much of the credit for the invention belongs to Dickson. In 1891, Thomas Edison built a
Kinetoscope The Kinetoscope is an precursors of film, early motion picture exhibition device, designed for films to be viewed by one person at a time through a peephole viewer window. The Kinetoscope was not a movie projector, but it introduced the basic ...
or peep-hole viewer. This device was installed in penny arcades, where people could watch short, simple films. The kinetograph and kinetoscope were both first publicly exhibited May 20, 1891. In April 1896,
Thomas Armat Thomas J. Armat (October 25, 1866 – September 30, 1948) was an American mechanic and inventor, a pioneer of cinema best known through the co-invention of the Edison Vitascope. Biography Armat studied at the Mechanics Institute in Richmond, Vir ...
's
Vitascope Vitascope was an early film projector first demonstrated in 1895 by Charles Francis Jenkins and Thomas Armat. They had made modifications to Jenkins' patented Phantoscope, which cast images via film and electric light onto a wall or screen. The ...
, manufactured by the Edison factory and marketed in Edison's name, was used to project motion pictures in public screenings in New York City. Later, he exhibited motion pictures with voice soundtrack on cylinder recordings, mechanically synchronized with the film. Officially the kinetoscope entered Europe when wealthy American businessman Irving T. Bush (1869–1948) bought from the Continental Commerce Company of Frank Z. Maguire and Joseph D. Baucus a dozen machines. Bush placed from October 17, 1894, the first kinetoscopes in London. At the same time, the French company Kinétoscope Edison Michel et Alexis Werner bought these machines for the market in France. In the last three months of 1894, the Continental Commerce Company sold hundreds of kinetoscopes in Europe (i.e. the Netherlands and Italy). In Germany and in
Austria-Hungary Austria-Hungary, often referred to as the Austro-Hungarian Empire,, the Dual Monarchy, or Austria, was a constitutional monarchy and great power in Central Europe between 1867 and 1918. It was formed with the Austro-Hungarian Compromise of ...
, the kinetoscope was introduced by the Deutsche-österreichische-Edison-Kinetoscop Gesellschaft, founded by the Ludwig Stollwerck of the Schokoladen-Süsswarenfabrik Stollwerck & Co of Cologne. The first kinetoscopes arrived in Belgium at the
Fairs A fair (archaic: faire or fayre) is a gathering of people for a variety of entertainment or commercial activities. Fairs are typically temporary with scheduled times lasting from an afternoon to several weeks. Types Variations of fairs incl ...
in early 1895. The Edison's Kinétoscope Français, a Belgian company, was founded in Brussels on January 15, 1895, with the rights to sell the kinetoscopes in Monaco, France and the French colonies. The main investors in this company were Belgian industrialists. On May 14, 1895, the Edison's Kinétoscope Belge was founded in Brussels. Businessman Ladislas-Victor Lewitzki, living in London but active in Belgium and France, took the initiative in starting this business. He had contacts with
Leon Gaumont Leon, Léon (French) or León (Spanish) may refer to: Places Europe * León, Spain, capital city of the Province of León * Province of León, Spain * Kingdom of León, an independent state in the Iberian Peninsula from 910 to 1230 and again fro ...
and the
American Mutoscope and Biograph The Biograph Company, also known as the American Mutoscope and Biograph Company, was a motion picture company founded in 1895 and active until 1916. It was the first company in the United States devoted entirely to film production and exhibition, ...
Co. In 1898, he also became a shareholder of the Biograph and Mutoscope Company for France. Edison's film studio made nearly 1,200 films. The majority of the productions were short films showing everything from acrobats to parades to fire calls including titles such as ''
Fred Ott's Sneeze ''Fred Ott's Sneeze'' (also known as ''Edison Kinetoscopic Record of a Sneeze'') is an 1894 short, black-and-white, silent film shot by William K.L. Dickson and featuring Fred Ott. It is the oldest surviving motion picture with a copyright. I ...
'' (1894), '' The Kiss'' (1896), '' The Great Train Robbery'' (1903), ''
Alice's Adventures in Wonderland ''Alice's Adventures in Wonderland'' (commonly ''Alice in Wonderland'') is an 1865 English novel by Lewis Carroll. It details the story of a young girl named Alice (Alice's Adventures in Wonderland), Alice who falls through a rabbit hole into a ...
'' (1910), and the first ''
Frankenstein ''Frankenstein; or, The Modern Prometheus'' is an 1818 novel written by English author Mary Shelley. ''Frankenstein'' tells the story of Victor Frankenstein, a young scientist who creates a sapient creature in an unorthodox scientific ex ...
'' film in 1910. In 1903, when the owners of Luna Park, Coney Island announced they would execute Topsy the elephant by strangulation, poisoning, and electrocution (with the electrocution part ultimately killing the elephant), Edison Manufacturing sent a crew to film it, releasing it that same year with the title ''
Electrocuting an Elephant ''Electrocuting an Elephant'' (also known as ''Electrocution of an Elephant'') is a 1903 American, short, black-and-white, silent documentary film of the killing of the elephant Topsy by electrocution at a Coney Island amusement park. It was pro ...
''. As the film business expanded, competing exhibitors routinely copied and exhibited each other's films. To better protect the copyrights on his films, Edison deposited prints of them on long strips of photographic paper with the
U.S. copyright office The United States Copyright Office (USCO), a part of the Library of Congress, is a United States government body that maintains records of copyright registration, including a copyright catalog. It is used by copyright title searchers who are ...
. Many of these paper prints survived longer and in better condition than the actual films of that era. In 1908, Edison started the
Motion Picture Patents Company The Motion Picture Patents Company (MPPC, also known as the Edison Trust), founded in December 1908 and terminated seven years later in 1915 after conflicts within the industry, was a trust of all the major US film companies and local foreign-bran ...
, which was a conglomerate of nine major film studios (commonly known as the Edison Trust). Thomas Edison was the first honorary fellow of the
Acoustical Society of America The Acoustical Society of America (ASA) is an international scientific society founded in 1929 dedicated to generating, disseminating and promoting the knowledge of acoustics and its practical applications. The Society is primarily a voluntary org ...
, which was founded in 1929. Edison said his favorite movie was ''
The Birth of a Nation ''The Birth of a Nation'', originally called ''The Clansman'', is a 1915 American silent epic drama film directed by D. W. Griffith and starring Lillian Gish. The screenplay is adapted from Thomas Dixon Jr.'s 1905 novel and play ''The Cla ...
''. He thought that
talkies A sound film is a motion picture with synchronized sound, or sound technologically coupled to image, as opposed to a silent film. The first known public exhibition of projected sound films took place in Paris in 1900, but decades passed before ...
had "spoiled everything" for him. "There isn't any good acting on the screen. They concentrate on the voice now and have forgotten how to act. I can sense it more than you because I am deaf."Reader's Digest, March 1930, pp. 1042–1044, "Living With a Genius", condensed from The American Magazine February 1930 His favorite stars were
Mary Pickford Gladys Marie Smith (April 8, 1892 – May 29, 1979), known professionally as Mary Pickford, was a Canadian-American stage and screen actress and producer with a career that spanned five decades. A pioneer in the US film industry, she co-founde ...
and
Clara Bow Clara Gordon Bow (; July 29, 1905 – September 27, 1965) was an American actress who rose to stardom during the silent film era of the 1920s and successfully made the transition to "talkies" in 1929. Her appearance as a plucky shopgirl in the ...
.


Mining

Starting in the late 1870s, Edison became interested and involved with mining. High-grade iron ore was scarce on the east coast of the United States and Edison tried to mine low-grade ore. Edison developed a process using rollers and crushers that could pulverize rocks up to 10 tons. The dust was then sent between three giant magnets that would pull the iron ore from the dust. Despite the failure of his mining company, the Edison Ore Milling Company, Edison used some of the materials and equipment to produce cement. In 1901, Edison visited an industrial exhibition in the Sudbury area in Ontario, Canada and thought nickel and cobalt deposits there could be used in his production of electrical equipment. He returned as a mining prospector and is credited with the original discovery of the
Falconbridge Falconbridge may refer to: *Falconbridge Ltd., a Canadian mining company *Falconbridge, Middlesex County, Ontario *Falconbridge, Greater Sudbury, Ontario People: *Lord Falconbridge, an alternative title for barons, viscounts, and earls of Fauconbe ...
ore body. His attempts to mine the ore body were not successful, and he abandoned his mining claim in 1903. A street in Falconbridge, as well as the Edison Building, which served as the head office of Falconbridge Mines, are named for him.


Rechargeable battery

In the late 1890s, Edison worked on developing a lighter, more efficient
rechargeable battery A rechargeable battery, storage battery, or secondary cell (formally a type of Accumulator (energy), energy accumulator), is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to ...
(at that time called an "accumulator"). He looked on them as something customers could use to power their phonographs but saw other uses for an improved battery, including electric automobiles. The then available lead acid rechargeable batteries were not very efficient and that market was already tied up by other companies so Edison pursued using
alkali In chemistry, an alkali (; from ar, القلوي, al-qaly, lit=ashes of the saltwort) is a basic, ionic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a ...
ne instead of acid. He had his lab work on many types of materials (going through some 10,000 combinations), eventually settling on a nickel-iron combination. Besides his experimenting Edison also probably had access to the 1899 patents for a
nickel–iron battery The nickel–iron battery (NiFe battery) is a rechargeable battery having nickel(III) oxide-hydroxide positive plates and iron negative plates, with an electrolyte of potassium hydroxide. The active materials are held in nickel-plated steel tub ...
by the Swedish inventor
Waldemar Jungner Ernst Waldemar Jungner (19 June 1869 – 30 August 1924) was a Swedish inventor and engineer. In 1898 he invented the nickel-iron electric storage battery (NiFe), the nickel-cadmium battery (NiCd), and the rechargeable alkaline silver-cadmium ...
.Seth Fletcher, Bottled Lightning: Superbatteries, Electric Cars, and the New Lithium Economy, Farrar, Straus and Giroux, May 10, 2011, pages 14–16 Edison obtained a US and European patent for his nickel–iron battery in 1901 and founded the Edison Storage Battery Company, and by 1904 it had 450 people working there. The first rechargeable batteries they produced were for electric cars, but there were many defects, with customers complaining about the product. When the capital of the company was exhausted, Edison paid for the company with his private money. Edison did not demonstrate a mature product until 1910: a very efficient and durable nickel-iron-battery with lye as the electrolyte. The nickel–iron battery was never very successful; by the time it was ready, electric cars were disappearing, and lead acid batteries had become the standard for turning over gas-powered car starter motors.


Chemicals

At the start of
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
, the American chemical industry was primitive. Most chemicals were imported from Europe. The outbreak of war in August 1914 resulted in an immediate shortage of imported chemicals. One of particular importance to Edison was
phenol Phenol (also called carbolic acid) is an aromatic organic compound with the molecular formula . It is a white crystalline solid that is volatile. The molecule consists of a phenyl group () bonded to a hydroxy group (). Mildly acidic, it req ...
, which was used to make
phonograph A phonograph, in its later forms also called a gramophone (as a trademark since 1887, as a generic name in the UK since 1910) or since the 1940s called a record player, or more recently a turntable, is a device for the mechanical and analogu ...
records—presumably as
phenolic resins Phenol formaldehyde resins (PF) or phenolic resins (also infrequently called phenoplasts) are synthetic polymers obtained by the reaction of phenol or substituted phenol with formaldehyde. Used as the basis for Bakelite, PFs were the first commerc ...
of the
Bakelite Polyoxybenzylmethylenglycolanhydride, better known as Bakelite ( ), is a thermosetting phenol formaldehyde resin, formed from a condensation reaction of phenol with formaldehyde. The first plastic made from synthetic components, it was developed ...
type. At the time, phenol came from coal as a by-product of
coke oven Coke is a grey, hard, and porous coal-based fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air—a destructive distillation process. It is an important industrial product, used mainly in iron ...
gases or
manufactured gas Fuel gas is any one of a number of fuel A fuel is any material that can be made to react with other substances so that it releases energy as thermal energy or to be used for work. The concept was originally applied solely to those mate ...
for
gas lighting Gas lighting is the production of artificial light from combustion of a gaseous fuel, such as hydrogen, methane, carbon monoxide, propane, butane, acetylene, ethylene, coal gas (town gas) or natural gas. The light is produced either directl ...
. Phenol could be nitrated to
picric acid Picric acid is an organic compound with the formula (O2N)3C6H2OH. Its IUPAC name is 2,4,6-trinitrophenol (TNP). The name "picric" comes from el, πικρός (''pikros''), meaning "bitter", due to its bitter taste. It is one of the most acidic ...
and converted to
ammonium picrate Dunnite, also known as Explosive D or systematically as ammonium picrate, is an explosive developed in 1906 by US Army Major Beverly W. Dunn, who later served as the chief inspector of the Bureau of Transportation Explosives. Ammonium picrate is ...
, a shock resistant
high explosive An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An exp ...
suitable for use in artillery shells. A telling of the phenol story is found in ''The Aspirin Wars''. Most phenol had been imported from Britain, but with war, Parliament blocked exports and diverted most to production of
ammonium picrate Dunnite, also known as Explosive D or systematically as ammonium picrate, is an explosive developed in 1906 by US Army Major Beverly W. Dunn, who later served as the chief inspector of the Bureau of Transportation Explosives. Ammonium picrate is ...
. Britain also blockaded supplies from Germany. Edison responded by undertaking production of phenol at his Silver Lake facility using processes developed by his chemists. He built two plants with a capacity of six tons of phenol per day. Production began the first week of September, one month after hostilities began in Europe. He built two plants to produce raw material
benzene Benzene is an organic chemical compound with the molecular formula C6H6. The benzene molecule is composed of six carbon atoms joined in a planar ring with one hydrogen atom attached to each. Because it contains only carbon and hydrogen atoms, ...
at
Johnstown, Pennsylvania Johnstown is a city in Cambria County, Pennsylvania, United States. The population was 18,411 as of the 2020 United States Census, 2020 census. Located east of Pittsburgh, Johnstown is the principal city of the Johnstown, Pennsylvania, Metropol ...
, and
Bessemer, Alabama Bessemer is a southwestern suburb of Birmingham in Jefferson County, Alabama, United States. The population was 26,019 at the 2020 census. It is within the Birmingham- Hoover, AL Metropolitan Statistical Area, of which Jefferson County is the ...
, replacing supplies previously from Germany. Edison also manufactured
aniline dyes Aniline is an organic compound with the formula C6 H5 NH2. Consisting of a phenyl group attached to an amino group, aniline is the simplest aromatic amine. It is an industrially significant commodity chemical, as well as a versatile startin ...
, which previously had been supplied by the German dye trust. Other wartime products include
xylene In organic chemistry, xylene or xylol (; IUPAC name: dimethylbenzene) are any of three organic compounds with the formula . They are derived from the substitution of two hydrogen atoms with methyl groups in a benzene ring; which hydrogens are s ...
,
p-phenylenediamine ''p''-Phenylenediamine (PPD) is an organic compound with the formula C6H4(NH2)2. This derivative of aniline is a white solid, but samples can darken due to air oxidation. It is mainly used as a component of engineering polymers and composites lik ...
,
shellac Shellac () is a resin secreted by the female lac bug on trees in the forests of India and Thailand. It is processed and sold as dry flakes and dissolved in alcohol to make liquid shellac, which is used as a brush-on colorant, food glaze and ...
, and pyrax. Wartime shortages made these ventures profitable. In 1915, his production capacity was fully committed by midyear. Phenol was a critical material because two derivatives were in high growth phases.
Bakelite Polyoxybenzylmethylenglycolanhydride, better known as Bakelite ( ), is a thermosetting phenol formaldehyde resin, formed from a condensation reaction of phenol with formaldehyde. The first plastic made from synthetic components, it was developed ...
, the original
thermoset In materials science, a thermosetting polymer, often called a thermoset, is a polymer that is obtained by irreversibly hardening (" curing") a soft solid or viscous liquid prepolymer ( resin). Curing is induced by heat or suitable radiation ...
plastic, had been invented in 1909.
Aspirin Aspirin, also known as acetylsalicylic acid (ASA), is a nonsteroidal anti-inflammatory drug (NSAID) used to reduce pain, fever, and/or inflammation, and as an antithrombotic. Specific inflammatory conditions which aspirin is used to treat inc ...
, too was a phenol derivative. Invented in 1899, it had become a block buster drug.
Bayer Bayer AG (, commonly pronounced ; ) is a German multinational corporation, multinational pharmaceutical and biotechnology company and one of the largest pharmaceutical companies in the world. Headquartered in Leverkusen, Bayer's areas of busi ...
had acquired a plant to manufacture in the US in Rensselaer, New York, but struggled to find phenol to keep their plant running during the war. Edison was able to oblige. Bayer relied on Chemische Fabrik von Heyden, in
Piscataway, New Jersey Piscataway () is a township in Middlesex County, New Jersey, United States. It is a suburb of the New York metropolitan area, in the Raritan Valley. At the 2010 United States Census, the population was 56,044, an increase of 5,562 (+11.0%) fr ...
, to convert phenol to salicylic acid, which they converted to aspirin. (See Great Phenol plot.) It is said that German companies bought up supplies of phenol to block production of
ammonium picrate Dunnite, also known as Explosive D or systematically as ammonium picrate, is an explosive developed in 1906 by US Army Major Beverly W. Dunn, who later served as the chief inspector of the Bureau of Transportation Explosives. Ammonium picrate is ...
. Edison preferred not to sell phenol for military uses. He sold his surplus to Bayer, who had it converted to salicylic acid by Heyden, some of which was exported.


Spirit Phone

In 1920, Edison spoke to ''
American Magazine ''The American Magazine'' was a periodical publication founded in June 1906, a continuation of failed publications purchased a few years earlier from publishing mogul Miriam Leslie. It succeeded ''Frank Leslie's Popular Monthly'' (1876–1904), ' ...
'', saying that he had been working on a device for some time to see if it was possible to communicate with the dead. Edison said the device would work on scientific principles not by an occult means. The announcement caused a press heyday, though the actual nature of this invention remained a mystery, as there were no details for some time. In 2015, Philippe Baudouin, a French journalist, found a copy of Edison's Diary in a thrift store with a chapter not found in the previously published editions. The new chapter details Edison's theories of the afterlife and the scientific basis by which communication with the dead might be achieved.


Final years and death


Final years

Henry Ford Henry Ford (July 30, 1863 – April 7, 1947) was an American industrialist, business magnate, founder of the Ford Motor Company, and chief developer of the assembly line technique of mass production. By creating the first automobile that mi ...
, the automobile magnate, later lived a few hundred feet away from Edison at his winter retreat in Fort Myers. Ford once worked as an engineer for the Edison Illuminating Company of Detroit and met Edison at a convention of affiliated Edison illuminating companies in Brooklyn, NY in 1896. Edison was impressed with Ford's internal combustion engine automobile and encouraged its developments. They were friends until Edison's death. Edison and Ford undertook annual motor camping trips from 1914 to 1924.
Harvey Firestone Harvey Samuel Firestone (December 20, 1868 – February 7, 1938) was an American businessman, and the founder of the Firestone Tire and Rubber Company, one of the first global makers of automobile tires. Family background Firestone was born o ...
and naturalist
John Burroughs John Burroughs (April 3, 1837 – March 29, 1921) was an American naturalist and nature essayist, active in the conservation movement in the United States. The first of his essay collections was ''Wake-Robin'' in 1871. In the words of his bio ...
also participated. In 1928, Edison joined the Fort Myers Civitan Club. He believed strongly in the organization, writing that "The Civitan Club is doing things—big things—for the community, state, and nation, and I certainly consider it an honor to be numbered in its ranks." He was an active member in the club until his death, sometimes bringing Henry Ford to the club's meetings. Edison was active in business right up to the end. Just months before his death, the
Lackawanna Railroad The Delaware, Lackawanna and Western Railroad (also known as the DL&W or Lackawanna Railroad) was a U.S. Class 1 railroad that connected Buffalo, New York, and Hoboken, New Jersey (and by ferry with New York City), a distance of . Incorporated in ...
inaugurated suburban electric train service from
Hoboken Hoboken ( ; Unami: ') is a city in Hudson County in the U.S. state of New Jersey. As of the 2020 U.S. census, the city's population was 60,417. The Census Bureau's Population Estimates Program calculated that the city's population was 58,69 ...
to Montclair,
Dover Dover () is a town and major ferry port in Kent, South East England. It faces France across the Strait of Dover, the narrowest part of the English Channel at from Cap Gris Nez in France. It lies south-east of Canterbury and east of Maidstone ...
, and
Gladstone, New Jersey Gladstone is an unincorporated community located within Peapack-Gladstone in Somerset County, New Jersey, United States. The area is served as United States Postal Service ZIP Code 07934.South Orange South Orange, officially the Township of South Orange Village, is a suburban township in Essex County, New Jersey, United States. As of the 2010 United States Census, the village's population was 16,198, reflecting a decline of 766 (4.5%) fro ...
. This fleet of cars would serve commuters in northern New Jersey for the next 54 years until their retirement in 1984. A plaque commemorating Edison's inaugural ride can be seen today in the waiting room of Lackawanna Terminal in Hoboken, which is presently operated by
New Jersey Transit New Jersey Transit Corporation, branded as NJ Transit, and often shortened to NJT, is a state-owned public transportation system that serves the U.S. state of New Jersey, along with portions of New York State and Pennsylvania. It operates bu ...
. Edison was said to have been influenced by a popular
fad diet A fad diet is a diet that becomes popular for a short time, similar to fads in fashion, without being a standard dietary recommendation, and often making unreasonable claims for fast weight loss or health improvements. There is no single defini ...
in his last few years; "the only liquid he consumed was a pint of milk every three hours". He is reported to have believed this diet would restore his health. However, this tale is doubtful. In 1930, the year before Edison died, Mina said in an interview about him, "Correct eating is one of his greatest hobbies." She also said that during one of his periodic "great scientific adventures", Edison would be up at 7:00, have breakfast at 8:00, and be rarely home for lunch or dinner, implying that he continued to have all three. Edison became the owner of his Milan, Ohio, birthplace in 1906. On his last visit, in 1923, he was reportedly shocked to find his old home still lit by lamps and candles.


Death

Edison died of complications of diabetes on October 18, 1931, in his home, "Glenmont" in
Llewellyn Park Llewellyn Park is a neighborhood in West Orange in Essex County, New Jersey, United States. It is a gated residential community of 175 homes, west of New York City. History Llewellyn Park was founded in 1853 by Llewellyn Solomon Haskell, ...
in
West Orange, New Jersey West Orange is a suburban township in Essex County, in the U.S. state of New Jersey. As of the 2020 United States Census, its population was 48,843, an increase of 2,636 (+5.7%) from the 46,207 counted in the 2010 Census.
, which he had purchased in 1886 as a wedding gift for Mina. Rev. Stephen J. Herben officiated at the funeral; Edison is buried behind the home. Edison's last breath is reportedly contained in a test tube at
The Henry Ford The Henry Ford (also known as the Henry Ford Museum of American Innovation and Greenfield Village, and as the Edison Institute) is a history museum complex in the Detroit suburb of Dearborn, Michigan, Dearborn, Michigan, United States. The museum ...
museum near Detroit. Ford reportedly convinced
Charles Edison Charles Edison (August 3, 1890 – July 31, 1969) was an American politician, businessman, inventor and animal behaviorist. He was the Assistant and then United States Secretary of the Navy, and served as the 42nd governor of New Jersey. Commonly ...
to seal a test tube of air in the inventor's room shortly after his death, as a memento. A plaster
death mask A death mask is a likeness (typically in wax or plaster cast) of a person's face after their death, usually made by taking a cast or impression from the corpse. Death masks may be mementos of the dead, or be used for creation of portraits. It ...
and casts of Edison's hands were also made. Mina died in 1947.


Marriages and children

On December 25, 1871, at the age of 24, Edison married 16-year-old Mary Stilwell (1855–1884), whom he had met two months earlier; she was an employee at one of his shops. They had three children: * Marion Estelle Edison (1873–1965), nicknamed "Dot" * Thomas Alva Edison Jr. (1876–1935), nicknamed "Dash" * William Leslie Edison (1878–1937) Inventor, graduate of the Sheffield Scientific School at Yale, 1900. Mary Edison died at age 29 on August 9, 1884, of unknown causes: possibly from a
brain tumor A brain tumor occurs when abnormal cells form within the brain. There are two main types of tumors: malignant tumors and benign (non-cancerous) tumors. These can be further classified as primary tumors, which start within the brain, and seconda ...
or a morphine overdose. Doctors frequently prescribed morphine to women in those years to treat a variety of causes, and researchers believe that her symptoms could have been from morphine poisoning."Thomas Edison's First Wife May Have Died of a Morphine Overdose"
, ''Rutgers Today''. Retrieved November 18, 2011
Edison generally preferred spending time in the laboratory to being with his family. On February 24, 1886, at the age of 39, Edison married the 20-year-old Mina Miller (1865–1947) in
Akron, Ohio Akron () is the fifth-largest city in the U.S. state of Ohio and is the county seat of Summit County, Ohio, Summit County. It is located on the western edge of the Glaciated Allegheny Plateau, about south of downtown Cleveland. As of the 2020 C ...
. She was the daughter of the inventor Lewis Miller, co-founder of the
Chautauqua Institution The Chautauqua Institution ( ) is a 501(c)(3) nonprofit education center and summer resort for adults and youth located on in Chautauqua, New York, northwest of Jamestown in the Western Southern Tier of New York State. Established in 1874, the ...
, and a benefactor of
Methodist Methodism, also called the Methodist movement, is a group of historically related denominations of Protestant Christianity whose origins, doctrine and practice derive from the life and teachings of John Wesley. George Whitefield and John's b ...
charities. They also had three children together: * Madeleine Edison (1888–1979), who married John Eyre Sloane. *
Charles Edison Charles Edison (August 3, 1890 – July 31, 1969) was an American politician, businessman, inventor and animal behaviorist. He was the Assistant and then United States Secretary of the Navy, and served as the 42nd governor of New Jersey. Commonly ...
(1890–1969),
Governor of New Jersey The governor of New Jersey is the head of government of New Jersey. The office of governor is an elected position with a four-year term. There is a two consecutive term term limit, with no limitation on non-consecutive terms. The official res ...
(1941–1944), who took over his father's company and experimental laboratories upon his father's death. *
Theodore Miller Edison Theodore Miller Edison (July 10, 1898 – November 24, 1992) was an American businessman, inventor, and environmentalist. He was the fourth son and youngest child of inventor Thomas Edison, and founder of Calibron Industries, Inc. He was the ...
(1898–1992), (MIT Physics 1923), credited with more than 80 patents. Mina outlived Thomas Edison, dying on August 24, 1947. Wanting to be an inventor, but not having much of an aptitude for it, Thomas Edison's son, Thomas Alva Edison Jr., became a problem for his father and his father's business. Starting in the 1890s, Thomas Jr. became involved in
snake oil Snake oil is a term used to describe deceptive marketing, health care fraud, or a scam. Similarly, "snake oil salesman" is a common expression used to describe someone who sells, promotes, or is a general proponent of some valueless or fraud ...
products and shady and fraudulent enterprises producing products being sold to the public as "The Latest Edison Discovery". The situation became so bad that Thomas Sr. had to take his son to court to stop the practices, finally agreeing to pay Thomas Jr. an allowance of $35 () per week, in exchange for not using the Edison name; the son began using aliases, such as Burton Willard. Thomas Jr., experiencing alcoholism, depression and ill health, worked at several menial jobs, but by 1931 (towards the end of his life) he would obtain a role in the Edison company, thanks to the intervention of his half-brother Charles.


Views


On religion and metaphysics

Historian Paul Israel has characterized Edison as a "
freethinker Freethought (sometimes spelled free thought) is an epistemological viewpoint which holds that beliefs should not be formed on the basis of authority, tradition, revelation, or dogma, and that beliefs should instead be reached by other metho ...
". Edison was heavily influenced by
Thomas Paine Thomas Paine (born Thomas Pain; – In the contemporary record as noted by Conway, Paine's birth date is given as January 29, 1736–37. Common practice was to use a dash or a slash to separate the old-style year from the new-style year. In th ...
's ''
The Age of Reason ''The Age of Reason; Being an Investigation of True and Fabulous Theology'' is a work by English and American political activist Thomas Paine, arguing for the philosophical position of deism. It follows in the tradition of 18th-century Briti ...
''. Edison defended Paine's "scientific
deism Deism ( or ; derived from the Latin ''deus'', meaning "god") is the Philosophy, philosophical position and Rationalism, rationalistic theology that generally rejects revelation as a source of divine knowledge, and asserts that Empirical evi ...
", saying, "He has been called an
atheist Atheism, in the broadest sense, is an absence of belief in the existence of deities. Less broadly, atheism is a rejection of the belief that any deities exist. In an even narrower sense, atheism is specifically the position that there no ...
, but atheist he was not. Paine believed in a supreme intelligence, as representing the idea which other men often express by the name of deity." In 1878, Edison joined the
Theosophical Society The Theosophical Society, founded in 1875, is a worldwide body with the aim to advance the ideas of Theosophy in continuation of previous Theosophists, especially the Greek and Alexandrian Neo-Platonic philosophers dating back to 3rd century CE ...
in New Jersey, but according to its founder,
Helena Blavatsky Helena Petrovna Blavatsky, uk, Олена Петрівна Блаватська, Olena Petrivna Blavatska (; – 8 May 1891), often known as Madame Blavatsky, was a Russian mystic and author who co-founded the Theosophical Society in 187 ...
, he was not a very active member. In an October 2, 1910, interview in the ''
New York Times Magazine ''The New York Times Magazine'' is an American Sunday magazine supplement included with the Sunday edition of ''The New York Times''. It features articles longer than those typically in the newspaper and has attracted many notable contributors. ...
'', Edison stated: Edison was accused of being an atheist for those remarks, and although he did not allow himself to be drawn into the controversy publicly, he clarified himself in a private letter: He also stated, "I do not believe in the God of the theologians; but that there is a Supreme Intelligence I do not doubt." In 1920, Edison set off a media sensation when he told
B. C. Forbes Bertie Charles Forbes (; May 14, 1880 – May 6, 1954) was a Scottish-American financial journalist and author who founded ''Forbes'' magazine. Life and career Forbes was born in New Deer, Aberdeenshire, Scotland, the son of Agnes (Moir) a ...
of ''
American Magazine ''The American Magazine'' was a periodical publication founded in June 1906, a continuation of failed publications purchased a few years earlier from publishing mogul Miriam Leslie. It succeeded ''Frank Leslie's Popular Monthly'' (1876–1904), ' ...
'' that he was working on a "spirit phone" to allow communication with the dead, a story which other newspapers and magazines repeated. Edison later disclaimed the idea, telling the ''New York Times'' in 1926 that "I really had nothing to tell him, but I hated to disappoint him so I thought up this story about communicating with spirits, but it was all a joke."


On politics

Edison was a supporter of
women's suffrage Women's suffrage is the right of women to vote in elections. Beginning in the start of the 18th century, some people sought to change voting laws to allow women to vote. Liberal political parties would go on to grant women the right to vot ...
. He said in 1915, "Every woman in this country is going to have the vote." Edison notably signed onto a statement supporting women's suffrage which was published to counter anti-suffragist literature spread by Senator
James Edgar Martine James Edgar Martine (August 25, 1850February 26, 1925) was an American Democratic Party politician who served as United States Senator from New Jersey. Biography He was born in New York City on August 25, 1850. He moved with his parents to Plai ...
.
Nonviolence Nonviolence is the personal practice of not causing harm to others under any condition. It may come from the belief that hurting people, animals and/or the environment is unnecessary to achieve an outcome and it may refer to a general philosoph ...
was key to Edison's political and moral views, and when asked to serve as a naval consultant for
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
, he specified he would work only on defensive weapons and later noted, "I am proud of the fact that I never invented weapons to kill." Edison's philosophy of nonviolence extended to animals as well, about which he stated: "Nonviolence leads to the highest ethics, which is the goal of all evolution. Until we stop harming all other living beings, we are still savages." He was a vegetarian but not a
vegan Veganism is the practice of abstaining from the use of animal product—particularly in diet—and an associated philosophy that rejects the commodity status of animals. An individual who follows the diet or philosophy is known as a vegan. ...
in actual practice, at least near the end of his life. Following a tour of Europe in 1911, Edison spoke negatively about "the belligerent
nationalism Nationalism is an idea and movement that holds that the nation should be congruent with the State (polity), state. As a movement, nationalism tends to promote the interests of a particular nation (as in a in-group and out-group, group of peo ...
that he had sensed in every country he visited". Edison was an advocate for monetary reform in the United States. He was ardently opposed to the
gold standard A gold standard is a monetary system in which the standard economic unit of account is based on a fixed quantity of gold. The gold standard was the basis for the international monetary system from the 1870s to the early 1920s, and from the la ...
and debt-based money. Famously, he was quoted in the ''New York Times'' as stating: "Gold is a relic of
Julius Caesar Gaius Julius Caesar (; ; 12 July 100 BC – 15 March 44 BC), was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in a civil war, and ...
, and interest is an invention of Satan." In the same article, he expounded upon the absurdity of a monetary system in which the taxpayer of the United States, in need of a loan, can be compelled to pay in return perhaps double the principal, or even greater sums, due to interest. Edison argued that, if the government can produce debt-based money, it could equally as well produce money that was a credit to the taxpayer. In May 1922, he published a proposal, entitled "A Proposed Amendment to the Federal Reserve Banking System". In it, he detailed an explanation of a commodity-backed currency, in which the
Federal Reserve The Federal Reserve System (often shortened to the Federal Reserve, or simply the Fed) is the central banking system of the United States of America. It was created on December 23, 1913, with the enactment of the Federal Reserve Act, after a ...
would issue interest-free currency to farmers, based on the value of commodities they produced. During a publicity tour that he took with friend and fellow inventor,
Henry Ford Henry Ford (July 30, 1863 – April 7, 1947) was an American industrialist, business magnate, founder of the Ford Motor Company, and chief developer of the assembly line technique of mass production. By creating the first automobile that mi ...
, he spoke publicly about his desire for monetary reform. For insight, he corresponded with prominent academic and banking professionals. In the end, however, Edison's proposals failed to find support and were abandoned.


Awards

The following is an incomplete list of awards given to Edison during his lifetime and posthumously: * In 1878, Edison was awarded an honorary PhD from
Union College Union College is a private liberal arts college in Schenectady, New York. Founded in 1795, it was the first institution of higher learning chartered by the New York State Board of Regents, and second in the state of New York, after Columbia Co ...
* The
President President most commonly refers to: *President (corporate title) *President (education), a leader of a college or university *President (government title) President may also refer to: Automobiles * Nissan President, a 1966–2010 Japanese ful ...
of the
Third French Republic The French Third Republic (french: Troisième République, sometimes written as ) was the system of government adopted in France from 4 September 1870, when the Second French Empire collapsed during the Franco-Prussian War, until 10 July 1940 ...
,
Jules Grévy François Judith Paul Grévy (15 August 1807 – 9 September 1891), known as Jules Grévy (), was a French lawyer and politician who served as President of France from 1879 to 1887. He was a leader of the Moderate Republicans, and given that hi ...
, on the recommendation of his
Minister of Foreign Affairs A foreign affairs minister or minister of foreign affairs (less commonly minister for foreign affairs) is generally a cabinet minister in charge of a state's foreign policy and relations. The formal title of the top official varies between cou ...
,
Jules Barthélemy-Saint-Hilaire Jules Barthélemy-Saint-Hilaire (19 August 1805 – 24 November 1895) was a French philosopher, journalist, statesman, and possible illegitimate son of Napoleon I of France. Biography Jules was born in Paris. Marie Belloc Lowndes, in th ...
, and with the presentations of the Minister of Posts and Telegraphs, Louis Cochery, designated Edison with the ''distinction'' of an
Officer of the Legion of Honour The National Order of the Legion of Honour (french: Ordre national de la Légion d'honneur), formerly the Royal Order of the Legion of Honour ('), is the highest French order of merit, both military and civil. Established in 1802 by Napoleon ...
(
Légion d'honneur The National Order of the Legion of Honour (french: Ordre national de la Légion d'honneur), formerly the Royal Order of the Legion of Honour ('), is the highest French order of merit, both military and civil. Established in 1802 by Napoleon ...
) by decree on November 10, 1881; Edison was also named a Chevalier in the Legion in 1879, and a Commander in 1889. * In 1887, Edison won the
Matteucci Medal The Matteucci Medal is an Italian award for physicists, named after Carlo Matteucci from Forlì. It was established to award physicists for their fundamental contributions. Under an Italian Royal Decree dated July 10, 1870, the Italian Society of S ...
. In 1890, he was elected a member of the
Royal Swedish Academy of Sciences The Royal Swedish Academy of Sciences ( sv, Kungliga Vetenskapsakademien) is one of the Swedish Royal Academies, royal academies of Sweden. Founded on 2 June 1739, it is an independent, non-governmental scientific organization that takes special ...
. * The
Philadelphia City Council The Philadelphia City Council, the legislative body of Philadelphia, Pennsylvania, consists of ten members elected by district and seven members elected at-large. The council president is elected by the members from among their number. Each ...
named Edison the recipient of the
John Scott Medal John Scott Award, created in 1816 as the John Scott Legacy Medal and Premium, is presented to men and women whose inventions improved the "comfort, welfare, and happiness of human kind" in a significant way. "...the John Scott Medal Fund, establish ...
in 1889. * In 1899, Edison was awarded the
Edward Longstreth Medal The Franklin Institute is a science museum and the center of science education and research in Philadelphia, Pennsylvania. It is named after the American scientist and statesman Benjamin Franklin. It houses the Benjamin Franklin National Memori ...
of
The Franklin Institute The Franklin Institute is a science museum and the center of science education and research in Philadelphia, Pennsylvania. It is named after the American scientist and statesman Benjamin Franklin. It houses the Benjamin Franklin National Memori ...
. * He was named an Honorable Consulting Engineer at the
Louisiana Purchase Exposition The Louisiana Purchase Exposition, informally known as the St. Louis World's Fair, was an World's fair, international exposition held in St. Louis, Missouri, United States, from April 30 to December 1, 1904. Local, state, and federal funds tota ...
World's fair A world's fair, also known as a universal exhibition or an expo, is a large international exhibition designed to showcase the achievements of nations. These exhibitions vary in character and are held in different parts of the world at a specif ...
in 1904. * In 1908, Edison received the American Association of Engineering Societies
John Fritz Medal The John Fritz Medal has been awarded annually since 1902 by the American Association of Engineering Societies (AAES) for "outstanding scientific or industrial achievements". The medal was created for the 80th birthday of John Fritz, who lived betw ...
. * In 1915, Edison was awarded
Franklin Medal The Franklin Medal was a science award presented from 1915 until 1997 by the Franklin Institute The Franklin Institute is a science museum and the center of science education and research in Philadelphia, Pennsylvania. It is named after the Am ...
of
The Franklin Institute The Franklin Institute is a science museum and the center of science education and research in Philadelphia, Pennsylvania. It is named after the American scientist and statesman Benjamin Franklin. It houses the Benjamin Franklin National Memori ...
for discoveries contributing to the foundation of industries and the well-being of the human race. * In 1920, the
United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
department awarded him the
Navy Distinguished Service Medal The Navy Distinguished Service Medal is a military decoration of the United States Navy and United States Marine Corps which was first created in 1919 and is presented to sailors and Marines to recognize distinguished and exceptionally meritoriou ...
. * In 1923, the
American Institute of Electrical Engineers The American Institute of Electrical Engineers (AIEE) was a United States-based organization of electrical engineers that existed from 1884 through 1962. On January 1, 1963, it merged with the Institute of Radio Engineers (IRE) to form the Instit ...
created the Edison Medal and he was its first recipient. * In 1927, he was granted membership in the
National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the Nati ...
. * On May 29, 1928, Edison received the
Congressional Gold Medal The Congressional Gold Medal is an award bestowed by the United States Congress. It is Congress's highest expression of national appreciation for distinguished achievements and contributions by individuals or institutions. The congressional pract ...
. * In 1983, the
United States Congress The United States Congress is the legislature of the federal government of the United States. It is bicameral, composed of a lower body, the House of Representatives, and an upper body, the Senate. It meets in the U.S. Capitol in Washing ...
, pursuant to Senate Joint Resolution 140 (Public Law 97–198), designated February 11, Edison's birthday, as National
Inventor's Day Inventors' Day is a day of the year set aside by a country to recognise the contributions of inventors. Not all countries recognise Inventors' Day. Those countries which do recognise an Inventors' Day do so with varying degrees of emphasis and on ...
. * ''
Life Life is a quality that distinguishes matter that has biological processes, such as signaling and self-sustaining processes, from that which does not, and is defined by the capacity for growth, reaction to stimuli, metabolism, energ ...
'' magazine (USA), in a special double issue in 1997, placed Edison first in the list of the "100 Most Important People in the Last 1000 Years", noting that the
light bulb An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting. Lamps usually have a base made of ceramic, metal, glass, or plastic, which secures the lamp in the soc ...
he promoted "lit up the world". In the 2005 television series ''
The Greatest American ''The Greatest American'' was a four-part American television series hosted by Matt Lauer in 2005. The show featured biographies and lists of influential persons in U.S. history, and culminated in a contest in which millions in the audience nomi ...
'', he was voted by viewers as the fifteenth greatest. * In 2008, Edison was inducted in the New Jersey Hall of Fame. * In 2010, Edison was honored with a
Technical Grammy Award The Technical Grammy Award is a Special Merit Grammy Award presented to individuals or companies who have made contributions of outstanding technical significance to the recording field. The award was first presented in 1994 to Dr. Thomas G. S ...
. * In 2011, Edison was inducted into the
Entrepreneur Walk of Fame The Entrepreneur Walk of Fame was established to recognize the positive impact of entrepreneurs on job creation and technological progress. Seven honorees were unveiled in the inaugural year. These were Bill Gates, Bill Hewlett, Bob Swanson, ...
and named a
Great Floridian Great Floridian is a title bestowed upon citizens in the state of Florida by the Florida Department of State. There were actually two formal programs. The Great Floridian 2000 program honored deceased individuals who made "significant contribution ...
by the governor and cabinet of Florida.


Tributes


Places and people named for Edison

Several places have been named after Edison, most notably the town of
Edison, New Jersey Edison is a township located in Middlesex County,in the U.S. state of New Jersey. Situated in Central New Jersey within the core of the state's Raritan Valley region, Edison is a commercial hub, home to Menlo Park Mall and Little India. It ...
.
Thomas Edison State University Thomas Edison State University (TESU) is a public university in Trenton, New Jersey. The university is one of New Jersey's 11 senior public institutions of higher education. Thomas Edison State University offers degrees at the undergraduate and ...
, nationally known for adult learners, is in
Trenton, New Jersey Trenton is the capital city of the U.S. state of New Jersey and the county seat of Mercer County. It was the capital of the United States from November 1 to December 24, 1784.Edison State College Florida SouthWestern State College (FSW or Florida SouthWestern) is a public college with its main campus in Fort Myers, Florida. It is part of the Florida College System. The college has satellite campuses in Charlotte County and Collier Cou ...
(now
Florida SouthWestern State College Florida SouthWestern State College (FSW or Florida SouthWestern) is a public college with its main campus in Fort Myers, Florida. It is part of the Florida College System. The college has satellite campuses in Charlotte County and Collier Cou ...
) in Fort Myers, Florida, and Edison Community College in
Piqua, Ohio Piqua ( ) is a city in Miami County, southwest Ohio, United States, 27 miles north of Dayton. The population was 20,522 at the 2010 census. It is part of the Dayton Metropolitan Statistical Area. It was founded as the village of Washington in ...
. There are numerous high schools named after Edison (see Edison High School) and other schools including
Thomas A. Edison Middle School Los Angeles Unified School District (LAUSD) is a public school district in Los Angeles, California, United States. It is the largest public school system in California in terms of number of students and the 2nd largest public school district in ...
. Footballer Pelé's father originally named him Edison, as a tribute to the inventor of the light bulb, but the name was incorrectly listed on his birth certificate as "Edson". The small town of Alva just east of Fort Myers took Edison's middle name. In 1883, the City Hotel in
Sunbury, Pennsylvania Sunbury is a city and county seat of Northumberland County, Pennsylvania, United States. It is located in Central Pennsylvania's Susquehanna Valley on the east bank of the Susquehanna River, just downstream of the confluence of its main and west ...
was the first building to be lit with Edison's three-wire system. The hotel was renamed The
Hotel Edison Hotel Edison is at 228 West 47th Street in Midtown Manhattan, New York City. Opened in 1931, it is part of the Triumph Hotels brand, owned by Shimmie Horn and Gerald Barad. Thomas Edison turned on the lights when it opened. It accommodated 1,0 ...
upon Edison's return to the city on 1922. In 1954,
Lake Thomas A Edison Lake Thomas A Edison (also known as Thomas A. Edison Lake and Edison Lake) is a reservoir in the Sierra National Forest and in Fresno County, California. It is in the Sierra Nevada, and near the Pacific Crest Trail. The reservoir's waters are impo ...
in California was named after Edison to mark the 75th anniversary of the
incandescent light bulb An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated until it glows. The filament is enclosed in a glass bulb with a vacuum or inert gas to protect the filament from oxid ...
. Edison was on hand to turn on the lights at the
Hotel Edison Hotel Edison is at 228 West 47th Street in Midtown Manhattan, New York City. Opened in 1931, it is part of the Triumph Hotels brand, owned by Shimmie Horn and Gerald Barad. Thomas Edison turned on the lights when it opened. It accommodated 1,0 ...
in New York City when it opened in 1931. Three bridges around the United States have been named in Edison's honor: the Edison Bridge in New Jersey, the Edison Bridge in Florida, and the Edison Bridge in Ohio. In space, his name is commemorated in
asteroid An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. ...
742 Edisona 742 Edisona is a minor planet orbiting the Sun that was discovered by German astronomer Franz Kaiser on February 23, 1913. It was named for inventor Thomas Edison. This asteroid is orbiting with a period of and an eccentricity of 0.119. The orbi ...
.
Mount Edison Mount Edison is an elevation glaciated summit located northwest of Valdez in the Chugach Mountains of the U.S. state of Alaska. Set on land managed by Chugach National Forest, this remote peak is situated northwest of Mount Einstein, near the ...
in the Chugach Mountains of Alaska was named after him in 1955.


Museums and memorials

In West Orange, New Jersey, the Glenmont estate is maintained and operated by the
National Park Service The National Park Service (NPS) is an agency of the United States federal government within the U.S. Department of the Interior that manages all national parks, most national monuments, and other natural, historical, and recreational propertie ...
as the
Edison National Historic Site Thomas Edison National Historical Park preserves Thomas Edison's laboratory and residence, ''Glenmont'', in West Orange, New Jersey, United States. These were designed, in 1887, by architect Henry Hudson Holly. The Edison laboratories operat ...
, as is his nearby laboratory and workshops including the reconstructed "Black Maria"—the world's first movie studio. The
Thomas Alva Edison Memorial Tower and Museum The Thomas Edison Center at Menlo Park, also known as the Menlo Park Museum / Edison Memorial Tower, is a memorial to inventor and businessman Thomas Alva Edison, located in the Menlo Park area of Edison, Middlesex County, New Jersey. The towe ...
is in the town of Edison, New Jersey. In
Beaumont, Texas Beaumont is a coastal city in the U.S. state of Texas. It is the county seat, seat of government of Jefferson County, Texas, Jefferson County, within the Beaumont–Port Arthur, Texas, Port Arthur Beaumont–Port Arthur metropolitan area, metropo ...
, there is an
Edison Museum The Edison Museum, a science and history museum about the life and inventions of Thomas Edison, is located in Beaumont, Texas at 350 Pine St. on the grounds of Edison Plaza. Building The museum building was formerly the Gulf States Utilities Tr ...
, though Edison never visited there. The Port Huron Museum, in Port Huron, Michigan, restored the original depot that Thomas Edison worked out of as a young news butcher. The depot has been named the
Thomas Edison Depot Museum The Thomas Edison Depot Museum (previously the Grand Trunk Western Railroad Depot) is a former railway depot located at 520 State Street in Port Huron, Michigan. It has been converted into a museum. The building was listed on the National Registe ...
. The town has many Edison historical landmarks, including the graves of Edison's parents, and a monument along the
St. Clair River The St. Clair River (french: Rivière Sainte-Claire) is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed November 7, 2011 river in central North America which flows from Lake Huron int ...
. In Detroit, the Edison Memorial Fountain in
Grand Circus Park The Grand Circus Park Historic District contains the Grand Circus Park in Downtown Detroit, Michigan that connects the theatre district with its financial district. It is bisected by Woodward Avenue, four blocks north of Campus Martius Park, ...
was created to honor his achievements. The limestone fountain was dedicated October 21, 1929, the fiftieth anniversary of the creation of the light bulb. On the same night, The Edison Institute was dedicated in nearby Dearborn. He was inducted into the
Automotive Hall of Fame The Automotive Hall of Fame is an American museum. It was founded in 1939 and has over 800 worldwide honorees. It is part of the MotorCities National Heritage Area. the Automotive Hall of Fame includes persons who have contributed greatly to a ...
in 1969. A bronze statue of Edison was placed in the
National Statuary Hall Collection The National Statuary Hall Collection in the United States Capitol is composed of statues donated by individual states to honor persons notable in their history. Limited to two statues per state, the collection was originally set up in the old ...
at the
United States Capitol The United States Capitol, often called The Capitol or the Capitol Building, is the seat of the legislative branch of the United States federal government, which is formally known as the United States Congress. It is located on Capitol Hill ...
in 2016, with the formal dedication ceremony held on September 20 of that year. The Edison statue replaced one of 19th-century state governor
William Allen William Allen may refer to: Politicians United States *William Allen (congressman) (1827–1881), United States Representative from Ohio *William Allen (governor) (1803–1879), U.S. Representative, Senator, and 31st Governor of Ohio *William ...
that had been one of Ohio's two allowed contributions to the collection.


Companies bearing Edison's name

* Edison General Electric, merged with
Thomson-Houston Electric Company The Thomson-Houston Electric Company was a manufacturing company which was one of the precursors of the General Electric company. History The Thomson-Houston Electric Company was formed in 1882 in the United States when a group of Lynn, Massa ...
to form
General Electric General Electric Company (GE) is an American multinational conglomerate founded in 1892, and incorporated in New York state and headquartered in Boston. The company operated in sectors including healthcare, aviation, power, renewable energ ...
*
Commonwealth Edison Commonwealth Edison, commonly known by syllabic abbreviation as ComEd, is the largest electric utility in Illinois, and the in Chicago and much of Northern Illinois. Its service territory stretches roughly from Iroquois County on the south to ...
, now part of
Exelon Exelon Corporation is an American Fortune 100 energy company headquartered in Chicago, Illinois and incorporated in Pennsylvania. It generates revenues of approximately $33.5 billion and employs approximately 33,400 people. Exelon is the larges ...
* Consolidated Edison *
Edison International Edison International is a public utility holding company based in Rosemead, California. Its subsidiaries include Southern California Edison, and unregulated non-utility business assets Edison Energy. Edison's roots trace back to Holt & Knu ...
*
Detroit Edison DTE Electric Company (formerly The Detroit Edison Company) was founded in 1886. DTE Electric's power generation portfolio includes renewable energy, but is primarily generated by fossil fuels. In 2021, 67.32% of electricity generated by DTE came ...
, a unit of
DTE Energy DTE Energy (formerly Detroit Edison until 1996) is a Detroit-based diversified energy company involved in the development and management of energy-related businesses and services in the United States and Canada. Its operating units include an elec ...
* Edison S.p.A., a unit of Italenergia * Trade association the
Edison Electric Institute The Edison Electric Institute (EEI) is an association that represents all U.S. investor-owned electric companies. Its members provide electricity for 220 million Americans, operate in 50 states and the District of Columbia, and directly employ ...
, a lobbying and research group for investor-owned utilities in the United States *
Edison Ore-Milling Company The Edison Ore-Milling Company was a venture by Thomas Edison that began in 1881. Edison introduced some significant technological developments to the iron ore milling industry but the company ultimately proved to be unprofitable. Towards the end ...
*
Edison Portland Cement Company The Edison Portland Cement Company was a venture by Thomas Edison that helped to improve the Portland cement industry. Edison was developing an iron ore milling process and discovered a market in the sale of waste sand to cement manufacturers. ...
* Ohio Edison (merged with Centerior in 1997 to form
First Energy FirstEnergy Corp is an electric utility headquartered in Akron, Ohio. It was established when Ohio Edison acquired Centerior Energy in 1997. Its subsidiaries and affiliates are involved in the distribution, transmission, and generation of electri ...
) *
Southern California Edison Southern California Edison (or SCE Corp), the largest subsidiary of Edison International, is the primary electricity supply company for much of Southern California. It provides 15 million people with electricity across a service territory of ap ...


Awards named in honor of Edison

The
Edison Medal The IEEE Edison Medal is presented by the Institute of Electrical and Electronics Engineers (IEEE) "for a career of meritorious achievement in electrical science, electrical engineering, or the electrical arts." It is the oldest medal in this fi ...
was created on February 11, 1904, by a group of Edison's friends and associates. Four years later the
American Institute of Electrical Engineers The American Institute of Electrical Engineers (AIEE) was a United States-based organization of electrical engineers that existed from 1884 through 1962. On January 1, 1963, it merged with the Institute of Radio Engineers (IRE) to form the Instit ...
(AIEE), later
IEEE The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operation ...
, entered into an agreement with the group to present the medal as its highest award. The first medal was presented in 1909 to
Elihu Thomson Elihu Thomson (March 29, 1853 – March 13, 1937) was an English-born American engineer and inventor who was instrumental in the founding of major electrical companies in the United States, the United Kingdom and France. Early life He was bor ...
. It is the oldest award in the area of
electrical and electronics engineering Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...
, and is presented annually "for a career of meritorious achievement in electrical science, electrical engineering or the electrical arts". In the Netherlands, the major music awards are named the
Edison Award The Edison Award is an annual Dutch music prize awarded for outstanding achievements in the music industry. It is comparable to the American Grammy Award. The Edison award itself is a bronze replica of a statuette of Thomas Edison, designed b ...
after him. The award is an annual Dutch music prize, awarded for outstanding achievements in the music industry, and is one of the oldest music awards in the world, having been presented since 1960. The American Society of Mechanical Engineers has awarded the Thomas A. Edison Patent Award since 1997 to individual patents that demonstrate a significant impact on the practice of mechanical engineering.


Other items named after Edison

The
United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
named the USS ''Edison'' (DD-439), a
Gleaves class destroyer The ''Gleaves''-class destroyers were a class of 66 destroyers of the United States Navy built 1938–42, designed by Gibbs & Cox. The first ship of the class was . They were the destroyer type that was in production for the US Navy when the U ...
, in his honor in 1940. The ship was decommissioned a few months after the end of World War II. In 1962, the Navy commissioned USS ''Thomas A. Edison'' (SSBN-610), a fleet ballistic missile nuclear-powered submarine.


In popular culture

Thomas Edison has appeared in popular culture as a character in novels, films, television shows, comics and video games. His prolific inventing helped make him an icon, and he has made appearances in popular culture during his lifetime down to the present day. Edison is also portrayed in popular culture as an adversary of
Nikola Tesla Nikola Tesla ( ; ,"Tesla"
''
Google Doodle A Google Doodle is a special, temporary alteration of the logo on Google's homepages intended to commemorate holidays, events, achievements, and notable historical figures. The first Google Doodle honored the 1998 edition of the long-running an ...
commemorating his many inventions. When the cursor was hovered over the doodle, a series of mechanisms seemed to move, causing a light bulb to glow.


People who worked for Edison

The following is a list of people who worked for Thomas Edison in his laboratories at Menlo Park or West Orange or at the subsidiary electrical businesses that he supervised. *
Edward Goodrich Acheson Edward Goodrich Acheson (March 9, 1856 – July 6, 1931) was an American chemist. Born in Washington, Pennsylvania, he was the inventor of the Acheson process, which is still used to make Silicon carbide (carborundum) and later a manufacturer of ...
– chemist, worked at Menlo Park 1880–1884 *
William Symes Andrews William Symes Andrews (September 10, 1847 – July 1, 1929) was an Edison Pioneer, electrical engineer, and one of the first employees of the General Electric Company. Biography He was born in England in 1847. He started working at Edison's Me ...
– started at the Menlo Park machine shop 1879 *
Charles Batchelor Charles W. Batchelor (December 25, 1845 – January 1, 1910) was an inventor and close associate of American inventor Thomas Alva Edison during much of Edison's career. He was involved in some of the greatest inventions and technological developmen ...
– "chief experimental assistant" *
John I. Beggs John Irvin Beggs (September 17, 1847 – October 17, 1925) was an American businessman. He was associated closely with the electric utility boom under Thomas Edison. He was also associated with Milwaukee, St. Louis, Missouri and other regiona ...
– manager of
Edison Illuminating Company The Edison Illuminating Company was established by Thomas Edison on December 17, 1880, to construct electrical generating stations, initially in New York City. The company was the prototype for other local illuminating companies that were establis ...
in New York, 1886 *
William Kennedy Dickson William Kennedy Laurie Dickson (3 August 1860 – 28 September 1935) was a British people, British inventor who devised an early motion picture camera under the employment of Thomas Edison. Early life William Kennedy Dickson was born on 3 ...
– joined Menlo Park in 1883, worked on the motion picture camera *
Justus B. Entz Justus Bulkley Entz (June 16, 1867, New York City – June 8, 1947, New Rochelle, New York) was an American electrical engineer and inventor. He invented the electromagnetic transmission, introduced in the Owen Magnetic of 1915, and was a pion ...
– joined
Edison Machine Works The Edison Machine Works was a manufacturing company set up to produce dynamos, large electric motors, and other components of the electrical illumination system being built in the 1880s by Thomas A. Edison in New York City. History The need fo ...
in 1887 *
Reginald Fessenden Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father. During his life he received hundre ...
– worked at the
Edison Machine Works The Edison Machine Works was a manufacturing company set up to produce dynamos, large electric motors, and other components of the electrical illumination system being built in the 1880s by Thomas A. Edison in New York City. History The need fo ...
in 1886 *
Henry Ford Henry Ford (July 30, 1863 – April 7, 1947) was an American industrialist, business magnate, founder of the Ford Motor Company, and chief developer of the assembly line technique of mass production. By creating the first automobile that mi ...
– engineer
Edison Illuminating Company The Edison Illuminating Company was established by Thomas Edison on December 17, 1880, to construct electrical generating stations, initially in New York City. The company was the prototype for other local illuminating companies that were establis ...
Detroit, Michigan, 1891–1899 *
William Joseph Hammer William Joseph Hammer (February 26, 1858 – March 24, 1934) was an American pioneer electrical engineer, aviator, and president of the Edison Pioneers. Biography He was born in Cressona, Pennsylvania on February 26, 1858 to William Hammer (1827 ...
– started as laboratory assistant Menlo Park in 1879 *
Miller Reese Hutchison Miller Reese Hutchison (August 6, 1876 – February 16, 1944) was an American electrical engineer and inventor. He developed some of the first portable electric devices, such as a vehicle horn and a hearing aid. His father was William Hutchison ...
– inventor of hearing aid *
Edward Hibberd Johnson Edward Hibberd Johnson (January 4, 1846 – September 9, 1917) was an inventor and business associate of American inventor Thomas Alva Edison. He was involved in many of Edison's projects, and was a partner in an early organization which evolved i ...
– started in 1909, chief engineer at West Orange laboratory 1912–1918 * Samuel Insull – started in 1881, rose to become VP of General Electric (1892) then President of Chicago Edison *
Kunihiko Iwadare was a Japanese businessman. A graduate of the Imperial College of Engineering (Kobu Daigaku) in Tokyo, he worked as a telegraph engineer for the Japanese government. Biography Iwarde left Japan in 1886 and traveled to New York. He was int ...
– joined
Edison Machine Works The Edison Machine Works was a manufacturing company set up to produce dynamos, large electric motors, and other components of the electrical illumination system being built in the 1880s by Thomas A. Edison in New York City. History The need fo ...
in 1887 *
Francis Jehl Francis Jehl (September 6, 1860 - February 11, 1941) was a laboratory assistant of Thomas Edison. Jehl studied chemistry at Cooper Union at night. After finishing school at the age of 18, he went to work for Edison at Menlo Park. In 1882, Jehl we ...
– laboratory assistant Menlo Park 1879–1882 *
Arthur E. Kennelly Arthur Edwin Kennelly (December 17, 1861 – June 18, 1939) was an American electrical engineer. Biography Kennelly was born December 17, 1861, in Colaba, in Bombay Presidency, British India, and was educated at University College School in Lond ...
– engineer, experimentalist at West Orange laboratory 1887–1894 *
John Kruesi John Kruesi (May 15, 1843 – February 22, 1899) was a Swiss-born machinist, and close associate of Thomas Edison. Career John Kruesi had been apprenticed as a locksmith in Switzerland, and migrated to the United States where he settled in N ...
– started 1872, was head machinist, at Newark, Menlo Park,
Edison Machine Works The Edison Machine Works was a manufacturing company set up to produce dynamos, large electric motors, and other components of the electrical illumination system being built in the 1880s by Thomas A. Edison in New York City. History The need fo ...
*
Lewis Howard Latimer Lewis Howard Latimer (September 4, 1848 – December 11, 1928) was an African-American inventor and patent draftsman. His inventions included an evaporative air conditioner, an improved process for manufacturing carbon filaments for light bulbs, ...
– hired 1884 as a draftsman, continued working for General Electric *
John W. Lieb John William Lieb (February 12, 1860, in Newark, New Jersey – November 1, 1929, in New Rochelle, New York) was an American electrical engineer for the Edison Electric Light Company. Lieb was president of the American Institute of Electrical Eng ...
– worked at the
Edison Machine Works The Edison Machine Works was a manufacturing company set up to produce dynamos, large electric motors, and other components of the electrical illumination system being built in the 1880s by Thomas A. Edison in New York City. History The need fo ...
in 1881 *
Thomas Commerford Martin Thomas Commerford Martin (July 22, 1856 – May 17, 1924) was an American electrical engineer and editor. Martin was born in Limehouse, England. His father worked with Lord Kelvin and other pioneers of submarine telegraph cables, and Martin worke ...
– electrical engineer, worked at Menlo Park 1877–1879 *
George F. Morrison George Francis Morrison (1867–1943), was an American business executive, industrialist, Edison Pioneer, and a Director and Vice President of General Electric Company. He was one of Thomas Edison, Thomas Edison's closest associates and a pioneer ...
– started at Edison Lamp Works 1882 *
Edwin Stanton Porter Edwin Stanton Porter (April 21, 1870 – April 30, 1941) was an American film pioneer, most famous as a producer, director, studio manager and cinematographer with the Edison Manufacturing Company and the Famous Players Film Company. Of over ...
– joined the
Edison Manufacturing Company The Edison Manufacturing Company, originally registered as the United Edison Manufacturing Company and often known as simply the Edison Company, was organized by inventor and entrepreneur Thomas Edison and incorporated in New York City in May 188 ...
1899 *
Frank J. Sprague Frank Julian Sprague (July 25, 1857 in Milford, Connecticut – October 25, 1934) was an American inventor who contributed to the development of the electric motor, electric railways, and electric elevators. His contributions were especially ...
– joined Menlo Park 1883, became known as the "Father of Electric Traction". *
Nikola Tesla Nikola Tesla ( ; ,"Tesla"
''
Edison Machine Works The Edison Machine Works was a manufacturing company set up to produce dynamos, large electric motors, and other components of the electrical illumination system being built in the 1880s by Thomas A. Edison in New York City. History The need fo ...
in 1884 *
Francis Robbins Upton Francis Robbins Upton (1852 in Peabody, Massachusetts – March 10, 1921 in Orange, New Jersey) was an American physicist and mathematician. Upton worked alongside Thomas Edison in the development of incandescent light bulbs, electric generators, ...
– mathematician/physicist, joined Menlo Park 1878 *
Theo Wangemann Adelbert Theodor Edward Wangemann (February 13, 1855 – June 1906), known as Theo, was a German who emigrated to the United States. In 1888, he began working for Thomas Edison as an assistant at his laboratory in West Orange, New Jersey. In 1889, ...
– personal assistant to Edison


See also

*
Edison Pioneers The Edison Pioneers was an organization composed of former employees of Thomas Edison who had worked with the inventor in his early years. Membership was limited to people who had worked closely with Edison before 1885. On February 11, 1918, the Ed ...
– a group formed in 1918 by employees and other associates of Thomas Edison *
Thomas Alva Edison Birthplace The Thomas Alva Edison Birthplace is a historic house museum at 9 Edison Drive in Milan, Ohio, Built in 1841, it was the birthplace of American inventor Thomas Alva Edison (1847-1931), born on February 11, 1847. It was designated a National Hi ...


References


Bibliography

* * * * * * * * * * * * * * *


External links


Museums


Menlo Park Museum and Edison Memorial Tower


(National Park Service)
Edison exhibit and Menlo Park Laboratory at Henry Ford Museum

Edison Museum



Edison Birthplace Museum

Thomas Edison House


Information and media

*
An Hour with Edison
,
Scientific American ''Scientific American'', informally abbreviated ''SciAm'' or sometimes ''SA'', is an American popular science magazine. Many famous scientists, including Albert Einstein and Nikola Tesla, have contributed articles to it. In print since 1845, it i ...
, July 13, 1878, p. 17
Interview with Thomas Edison in 1931


* *

at the National Archives. *

National Park Service (NPS)
Thomas Edison Personal Manuscripts and Letters
by Frank Lewis Dyer and Thomas Commerford Martin. *
Edison Papers
Rutgers.
Edisonian Museum Antique Electrics

Edison Innovation Foundation
Non-profit foundation A nonprofit organization (NPO) or non-profit organisation, also known as a non-business entity, not-for-profit organization, or nonprofit institution, is a legal entity organized and operated for a collective, public or social benefit, in co ...
supporting the legacy of Thomas Edison. *
The Illustrious Vagabonds
Henry Ford Heritage Association
"The World's Greatest Inventor"
October 1931, ''
Popular Mechanics ''Popular Mechanics'' (sometimes PM or PopMech) is a magazine of popular science and technology, featuring automotive, home, outdoor, electronics, science, do-it-yourself, and technology topics. Military topics, aviation and transportation o ...
''. Detailed, illustrated article. * 14 minutes "instructional" film with fictional element
The boyhood of Thomas Edison
from 1964, produced by Coronet, published by archive.org
"Edison's Miracle of Light"
PBS – ''American Experience''. Premiered January 2015. * {{DEFAULTSORT:Edison, Thomas 1847 births 1931 deaths 19th-century American businesspeople 19th-century American inventors 20th-century American businesspeople 20th-century American inventors American chief executives American deists American electrical engineers American film production company founders American film studio executives American manufacturing businesspeople American patent holders American people of Canadian descent American people of Dutch descent American people of English descent American people of Scottish descent American scientists American telecommunications engineers American Theosophists Articles containing video clips Battery inventors Burials in New Jersey Businesspeople from Florida Businesspeople from New York City Businesspeople from Newark, New Jersey Businesspeople from Ohio Cinema pioneers Congressional Gold Medal recipients Deaf people from the United States Deaths from diabetes
Thomas Thomas may refer to: People * List of people with given name Thomas * Thomas (name) * Thomas (surname) * Saint Thomas (disambiguation) * Thomas Aquinas (1225–1274) Italian Dominican friar, philosopher, and Doctor of the Church * Thomas the A ...
General Electric people General Electric Hall of Fame for Great Americans inductees Honorary Members of the USSR Academy of Sciences Inventors from New Jersey Members of the American Philosophical Society Members of the Royal Swedish Academy of Sciences Members of the United States National Academy of Sciences Officiers of the Légion d'honneur People associated with electricity People from Edison, New Jersey People from Fort Myers, Florida People from Manhattan People from Milan, Ohio People from West Orange, New Jersey Phonograph manufacturers Recipients of the Navy Distinguished Service Medal Telegraph engineers and inventors Recipients of the Matteucci Medal Inventors from Ohio