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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 lighting in New York City and around the country (during the "war of the currents"). Brown was mostly self-educated, working for several companies in the fledgling electrical field before striking out on his own, working on his own inventions as well as hiring himself out as a consultant. After several deaths were caused by the high voltages used in alternating current arc lighting systems in New York City, Brown came to prominence in June 1888, claiming in the press and then in public meetings that AC was more deadly than direct current (DC) and that the arc lighting companies were cutting corners and using AC to save money at the cost of public safety. He conducted public demonstrations (electrocuting animals with AC) then lobbied around t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American People
Americans are the Citizenship of the United States, citizens and United States nationality law, nationals of the United States, United States of America.; ; Although direct citizens and nationals make up the majority of Americans, many Multiple citizenship, dual citizens, expatriates, and green card, permanent residents could also legally claim American nationality. The United States is home to race and ethnicity in the United States, people of many racial and ethnic origins; consequently, culture of the United States, American culture and Law of the United States, law do not equate nationality with Race (human categorization), race or Ethnic group, ethnicity, but with citizenship and an Oath of Allegiance (United States), oath of permanent allegiance. Overview The majority of Americans or their ancestors Immigration to the United States, immigrated to the United States or are descended from people who were Trans Atlantic Slave Trade, brought as Slavery in the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 established in the United States during the 1880s. History Pearl Street Station On September 4, 1882, Edison's first central station, the Pearl Street Station, opened at 257 Pearl Street in Manhattan. The station was the first commercial power plant in the United States, and was the world's first cogeneration plant. The plant burned down on January 2 1890. Only 1 dynamo (or generator) survived, and is currently displayed at the Henry Ford Museum. The Institute of Electrical and Electronics Engineers designated it as a milestone in 2011. Other stations In November 1882, the Edison Electric Illuminating Company of Shamokin, Pennsylvania was established. In 1883, it became only the second three-wire electrical station in the world. The first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propaganda
Propaganda is communication that is primarily used to influence or persuade an audience to further an agenda, which may not be objective and may be selectively presenting facts to encourage a particular synthesis or perception, or using loaded language to produce an emotional rather than a rational response to the information that is being presented. Propaganda can be found in news and journalism, government, advertising, entertainment, education, and activism and is often associated with material which is prepared by governments as part of war efforts, political campaigns, health campaigns, revolutionaries, big businesses, ultra-religious organizations, the media, and certain individuals such as soapboxers. In the 20th century, the English term ''propaganda'' was often associated with a manipulative approach, but historically, propaganda has been a neutral descriptive term of any material that promotes certain opinions or ideologies. Equivalent non-English terms have also la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Edison
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, mass communication, sound recording, and motion pictures. These inventions, which include the phonograph, the motion picture camera, and early versions of the electric light bulb, have had a widespread impact on the modern industrialized world. 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. Edison was raised in the American Midwest. Early in his career he worked as a telegraph operator, which inspired some of his earliest inventions. In 1876, he established his first laboratory facility in Menlo Park, New Jersey, where many of his early inventions were developed. He later established a botanical laboratory in Fort Myers, Florida, in co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York Post
The ''New York Post'' (''NY Post'') is a conservative daily tabloid newspaper published in New York City. The ''Post'' also operates NYPost.com, the celebrity gossip site PageSix.com, and the entertainment site Decider.com. It was established in 1801 by Federalist and Founding Father Alexander Hamilton, and became a respected broadsheet in the 19th century under the name ''New York Evening Post''. Its most famous 19th-century editor was William Cullen Bryant. In the mid-20th century, the paper was owned by Dorothy Schiff, a devoted liberal, who developed its tabloid format. In 1976, Rupert Murdoch bought the ''Post'' for US$30.5 million. Since 1993, the ''Post'' has been owned by Murdoch's News Corp. Its distribution ranked 4th in the US in 2019. History 19th century The ''Post'' was founded by Alexander Hamilton with about US$10,000 () from a group of investors in the autumn of 1801 as the ''New-York Evening Post'', a broadsheet. Hamilton's co-investors included other New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blizzard 1888 01
A blizzard is a severe snowstorm characterized by strong sustained winds and low visibility, lasting for a prolonged period of time—typically at least three or four hours. A ground blizzard is a weather condition where snow is not falling but loose snow on the ground is lifted and blown by strong winds. Blizzards can have an immense size and usually stretch to hundreds or thousands of kilometres. Definition and etymology In the United States, the National Weather Service defines a blizzard as a severe snow storm characterized by strong winds causing blowing snow that results in low visibilities. The difference between a blizzard and a snowstorm is the strength of the wind, not the amount of snow. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to with blowing or drifting snow which reduces visibility to or less and must last for a prolonged period of time—typically three hours or more. Environment Canada de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Memorial. Founded in 1824, the Franklin Institute is one of the oldest centers of science education and development in the United States. Its chief astronomer is Derrick Pitts. History On February 5, 1824, Samuel Vaughan Merrick and William H. Keating founded the Franklin Institute of the State of Pennsylvania for the Promotion of the Mechanic Arts. Begun in 1825, the institute was an important force in the professionalization of American science and technology through the nineteenth century, beginning with early investigations into steam engines and water power. In addition to conducting scientific inquiry, it fostered research and education by running schools, publishing the influential ''Journal of The Franklin Institute'', sponsoring e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David B
David Robert Jones (8 January 194710 January 2016), known professionally as David Bowie ( ), was an English singer-songwriter and actor. A leading figure in the music industry, he is regarded as one of the most influential musicians of the 20th century. Bowie was acclaimed by critics and musicians, particularly for his innovative work during the 1970s. His career was marked by reinvention and visual presentation, and his music and stagecraft had a significant impact on popular music. Bowie developed an interest in music from an early age. He studied art, music and design before embarking on a professional career as a musician in 1963. "Space Oddity", released in 1969, was his first top-five entry on the UK Singles Chart. After a period of experimentation, he re-emerged in 1972 during the glam rock era with his flamboyant and androgynous alter ego Ziggy Stardust (character), Ziggy Stardust. The character was spearheaded by the success of Bowie's single "Starman (song), Starma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arc Lamp
An arc lamp or arc light is a lamp that produces light by an electric arc (also called a voltaic arc). The carbon arc light, which consists of an arc between carbon electrodes in air, invented by Humphry Davy in the first decade of the 1800s, was the first practical electric light. It was widely used starting in the 1870s for street and large building lighting until it was superseded by the incandescent light in the early 20th century. It continued in use in more specialized applications where a high intensity point light source was needed, such as searchlights and movie projectors until after World War II. The carbon arc lamp is now obsolete for most of these purposes, but it is still used as a source of high intensity ultraviolet light. The term is now used for gas discharge lamps, which produce light by an arc between metal electrodes through a gas in a glass bulb. The common fluorescent lamp is a low-pressure mercury arc lamp. The xenon arc lamp, which produces a high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Pen
Thomas Edison's electric pen, part of a complete outfit for duplicating handwritten documents and drawings, was the first relatively safe electric-motor-driven office appliance produced and sold in the United States. Development Edison recognized the possible demand for a high speed copying device after observing the incredible amount of document duplication required of merchants, lawyers, insurance companies, and those of similar occupations."Thomas A. Edison Papers." Electric Pen - The Edison Papers. Rutgers, n.d. Web. 14 Feb. 2017. . To satisfy this demand, Edison invented the electric pen, which uses a perforating function inspired by the printing telegraph. Edison and his associate Charles Batchelor observed that as this device punctured the paper, a mark was left underneath by the chemical solution it utilized. Edison took advantage of this property and built the electric pen around it.Burns, Bill. "Edison’s Electric Pen." Edison’s Electric Pen. FTL Design, n.d. Web. 14 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Chicago Fire
The Great Chicago Fire was a conflagration that burned in the American city of Chicago during October 8–10, 1871. The fire killed approximately 300 people, destroyed roughly of the city including over 17,000 structures, and left more than 100,000 residents homeless. The fire began in a neighborhood southwest of the city center. A long period of hot, dry, windy conditions, and the wooden construction prevalent in the city, led to the conflagration. The fire leapt the south branch of the Chicago River and destroyed much of central Chicago and then leapt the main branch of the river, consuming the Near North Side. Help flowed to the city from near and far after the fire. The city government improved building codes to stop the rapid spread of future fires and rebuilt rapidly to those higher standards. A donation from the United Kingdom spurred the establishment of the Chicago Public Library. Origin The fire is claimed to have started at about 8:30 p.m. on October ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard
Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher learning in the United States and one of the most prestigious and highly ranked universities in the world. The university is composed of ten academic faculties plus Harvard Radcliffe Institute. The Faculty of Arts and Sciences offers study in a wide range of undergraduate and graduate academic disciplines, and other faculties offer only graduate degrees, including professional degrees. Harvard has three main campuses: the Cambridge campus centered on Harvard Yard; an adjoining campus immediately across Charles River in the Allston neighborhood of Boston; and the medical campus in Boston's Longwood Medical Area. Harvard's endowment is valued at $50.9 billion, making it the wealthiest academic institution in the world. Endowment inco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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