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Oliver Shallenberger
Oliver Blackburn Shallenberger (May 7, 1860 – January 23, 1898) was an American electrical engineer and inventor. He is associated with electrical inventions related to alternating current. He is most noted for inventing the first successful alternating current (AC) electrical meter, the forerunner of the modern electric meter. This was critical to general acceptance of AC power. Early life Shallenberger was born in Rochester, Pennsylvania, on May 7, 1860. His parents were Aaron T. Shallenberger and Mary (Bonbright) Shallenberger. He attended public schools of Rochester in Beaver County. He also went to Beaver College in Beaver County for a short time. He then attended the United States Naval Academy at Annapolis as a cadet engineer in 1877. William Shadrack Shallenberger, a member of Congress, was his uncle and helped him get into the Academy. He was head of a list of 126 candidates and took special interest in their physics courses. For the first year he was at the top of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rochester, Pennsylvania
Rochester is a borough in central Beaver County, Pennsylvania, United States. Located northwest of Pittsburgh, it is part of the Pittsburgh metropolitan area. The population was 3,480 at the 2020 census. Like many places around Pittsburgh, Rochester was a former industrial hub, home to the H. C. Fry Glass Company, and was a major junction on the Pennsylvania Railroad. Recently, Rochester has been a background for films, including the 1986 movie ''Gung Ho'', the 1996 movie '' Kingpin'', and the 2000 movie ''Wonder Boys''. History What eventually became Rochester was originally a Lenape village called Sawcunk. The area was settled in 1799 in what was then the American frontier by white settlers and was known as East Bridgewater, Fairport, and Beaver Point. The borough adopted the name Rochester in 1834 when a local businessman who did regular business in Pittsburgh decided to christen his home with the name Rochester so he could have a unique name to stamp his goods; the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newspapers
A newspaper is a periodical publication containing written information about current events and is often typed in black ink with a white or gray background. Newspapers can cover a wide variety of fields such as politics, business, sports and art, and often include materials such as opinion columns, weather forecasts, reviews of local services, obituaries, birth notices, crosswords, editorial cartoons, comic strips, and advice columns. Most newspapers are businesses, and they pay their expenses with a mixture of subscription revenue, newsstand sales, and advertising revenue. The journalism organizations that publish newspapers are themselves often metonymically called newspapers. Newspapers have traditionally been published in print (usually on cheap, low-grade paper called newsprint). However, today most newspapers are also published on websites as online newspapers, and some have even abandoned their print versions entirely. Newspapers developed in the 17th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AC Motor
An AC motor is an electric motor driven by an alternating current (AC). The AC motor commonly consists of two basic parts, an outside stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor (electric), rotor attached to the output shaft producing a second rotating magnetic field. The rotor magnetic field may be produced by permanent magnets, reluctance saliency, or DC or AC electrical windings. Less common, AC linear motors operate on similar principles as rotating motors but have their stationary and moving parts arranged in a straight line configuration, producing linear motion instead of rotation. Operating principles The two main types of AC motors are induction motors and synchronous motors. The induction motor (or asynchronous motor) always relies on a small difference in speed between the stator rotating magnetic field and the rotor shaft speed called slip to electromagnetic induction, induce rotor current in the rot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rube Goldberg
Reuben Garrett Lucius Goldberg (July 4, 1883 – December 7, 1970), known best as Rube Goldberg, was an American cartoonist, sculptor, author, engineer, and inventor. Goldberg is best known for his popular cartoons depicting complicated gadgets performing simple tasks in indirect, convoluted ways. The cartoons led to the expression "Rube Goldberg machines" to describe similar gadgets and processes. Goldberg received many honors in his lifetime, including a Pulitzer Prize for political cartooning in 1948, the National Cartoonists Society's Gold T-Square Award in 1955, and the Banshees' Silver Lady Award in 1959. He was a founding member and first president of the National Cartoonists Society, which hosts the annual Reuben Award, honoring the top cartoonist of the year and named after Goldberg, who won the award in 1967. He is the inspiration for international competitions known as Rube Goldberg Machine Contests, which challenge participants to create a complicated machine to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walking Beam
A marine steam engine is a steam engine that is used to power a ship or boat. This article deals mainly with marine steam engines of the reciprocating type, which were in use from the inception of the steamboat in the early 19th century to their last years of large-scale manufacture during World War II. Reciprocating steam engines were progressively replaced in marine applications during the 20th century by steam turbines and marine diesel engines. History The first commercially successful steam engine was developed by Thomas Newcomen in 1712. The steam engine improvements brought forth by James Watt in the later half of the 18th century greatly improved steam engine efficiency and allowed more compact engine arrangements. Successful adaptation of the steam engine to marine applications in England would have to wait until almost a century after Newcomen, when Scottish engineer William Symington built the world's "first practical steamboat", the ''Charlotte Dundas'', in 1802. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 born in Manchester, England, on March 29, 1853, but his family moved to Philadelphia in the United States in 1858. and Thomson attended Central High School in Philadelphia and graduated in 1870. Thomson took a teaching position at Central, and in 1876, at the age of twenty-three, held the chair of Chemistry. In 1880, he left Central to pursue research in the emerging field of electrical engineering. Electrical innovations With Edwin J. Houston, a former teacher and later colleague of Thomson's at Central High School, Thomson founded the Thomson-Houston Electric Company. Notable inventions created by Thomson during this period include an arc-lighting system, an automatically regulated three-coil dynamo, a magnetic lightning arrester, an ... [...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] |
Condé Nast
Condé Nast () is a global mass media company founded in 1909 by Condé Montrose Nast, and owned by Advance Publications. Its headquarters are located at One World Trade Center in the Financial District of Lower Manhattan. The company's media brands attract more than 72 million consumers in print, 394 million in digital and 454 million across social platforms. These include ''Vogue'', ''The New Yorker'', '' Condé Nast Traveler'', '' GQ'', '' Glamour'', '' Architectural Digest'', '' Vanity Fair, Pitchfork'', ''Wired'', and '' Bon Appétit,'' among many others. US ''Vogue'' editor-in-chief Anna Wintour serves as Artistic Director and Global Chief Content Officer. In 2011, the company launched the Condé Nast Entertainment division, tasked with developing film, television, social and digital video, and virtual reality content. History The company traces its roots to 1909, when Condé Montrose Nast, a New York City-born publisher, purchased ''Vogue,'' a printed magazine launched ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wired Magazine
''Wired'' (stylized as ''WIRED'') is a monthly American magazine, published in print and online magazine, online editions, that focuses on how emerging technologies affect culture, the economy, and politics. Owned by Condé Nast, it is headquartered in San Francisco, California, and has been in publication since March/April 1993. Several spin-offs have been launched, including ''Wired UK'', ''Wired Italia'', ''Wired Japan'', and ''Wired Germany''. From its beginning, the strongest influence on the magazine's editorial outlook came from founding editor and publisher Louis Rossetto. With founding creative director John Plunkett, Rossetto in 1991 assembled a 12-page prototype, nearly all of whose ideas were realized in the magazine's first several issues. In its earliest colophon (publishing), colophons, ''Wired'' credited Canadian media theorist Marshall McLuhan as its "patron saint". ''Wired'' went on to chronicle the evolution of digital technology and its impact on society. ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity Meter
North American domestic analog electricity meter. Electricity meter with transparent plastic case (Israel) North American domestic electronic electricity meter An electricity meter, electric meter, electrical meter, energy meter, or kilowatt-hour meter is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device. Electric meter or energy meter measures the total power consumed over a time interval. Electric utilities use electric meters installed at customers' premises for billing and monitoring purposes. They are typically calibrated in billing units, the most common one being the kilowatt hour (''kWh''). They are usually read once each billing period. When energy savings during certain periods are desired, some meters may measure demand, the maximum use of power in some interval. "Time of day" metering allows electric rates to be changed during a day, to record usage during peak high-cost periods and of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
