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Light bulbs with a carbon filament were first demonstrated by Thomas Edison in October 1879. These carbon filament bulbs, the first electric light bulbs, became available commercially that same year. In 1904 a tungsten filament was invented by Austro-Hungarians Alexander Just and Franjo Hanaman, and was more efficient and longer-lasting than ...
Congressional Gold Medal (1928) Signature. Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman. [1] [2] [3] He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. [4]
Edison's method was to invent systems rather than components of systems. Edison did not just invent a light bulb, he invented an economically viable system of lighting including its generators, cables, metering and so on. Edison invented by repeatedly trying devices in more complex environments to progressively approximate their final use ...
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 developing and supplying the first incandescent lights used to illuminate homes and public buildings, including the Savoy Theatre, London, in 1881.
The war of the currents was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s. It grew out of two lighting systems developed in the late 1870s and early 1880s; arc lamp street lighting running on high-voltage alternating current (AC), and large-scale low-voltage direct current (DC) indoor incandescent lighting ...
Lewis Howard Latimer (September 4, 1848 – December 11, 1928) was an American inventor and patent draftsman. His inventions included an evaporative air conditioner, an improved process for manufacturing carbon filaments for light bulbs, and an improved toilet system for railroad cars. In 1884, he joined the Edison Electric Light Company where ...
History. Historians Robert Friedel and Paul Israel list inventors of incandescent lamps prior to Joseph Swan and Thomas Edison of General Electric.: 91–93 They conclude that Edison's version was the first practical implementation, able to outstrip the others because of a combination of four factors: an effective incandescent material; a vacuum higher than other implementations which was ...
Signature. Edward Hibberd Johnson (January 4, 1846 – September 9, 1917) [1] 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 into General Electric. When Johnson was Vice President of the Edison Electric Light ...