Search results
Results from the WOW.Com Content Network
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 ]
Diehl was a contemporary of Thomas Edison and his inventions caused Edison to reduce the price of his incandescent bulb. He occasionally spelled his first name 'Phillip'. [1] In July 1868, he immigrated to New York City where he worked in several machine shops before finding work as an apprentice with the Singer Manufacturing Company.
Russian engineer Pavel Yablochkov invented the electric carbon arc lamp. 1876: Scottish inventor Alexander Graham Bell patented the telephone. 1877: American inventor Thomas Edison invented the phonograph. 1877: German industrialist Werner von Siemens developed a primitive loudspeaker. 1878: First electric street lighting in Paris, France 1878
John White Howell (December 22, 1857 – July 28, 1937) was an American electrical engineer who spent his entire professional career (1880 to 1930) working for Thomas Edison, specializing in the development and manufacturing of the incandescent lamp.
Collecter, Ward Harris, holds a talking doll with a metal torso that was invented by Thomas Edison, in San Francisco, Calif., Feb. 9, 1949. Harris holds in his other hand the inside mechanicals of ...
U.S. patent 0,222,881 – Magneto-Electric Machines : Edison main dynamo. The device's nickname was the "long-legged Mary-Ann". This device has large bipolar magnets and is highly inefficient. U.S. patent 0,223,898 – Electric Lamp : Edison's incandescent light bulb invention. The original spiral carbon-filament is shown and repeatedly ...
He presented a paper on them in 1885, where he referred to thermionic emission as the "Edison Effect." [14] The British physicist John Ambrose Fleming, who in 1882 had accepted a consulting position for the Edison & Swan Electric Light Company of London, discovered in 1885 that the Edison Effect could be used to detect radio waves. Fleming went ...
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 ...