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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 ]
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 ...
In 1876, brilliant inventor Thomas Edison added one more patent to his collection, which would eventually number 1093 in total, when he patented his electric pen.
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
First airplane (Blériot VII) with a modern layout : monoplane, conventional tail, fully covered fuselage, front propeller / enclosed engine (1907). [31] [32] First to use a combination of hand/arm-operated joystick and foot-operated rudder control. [33] First heavier-than-air crossing of the English Channel in a Blériot XI (25 Jul 1909). [34]
Historian Thomas Hughes (1977) describes the features of Edison's method. In summary, they are: Hughes says, "In formulating problem-solving ideas, he was inventing; in developing inventions, his approach was akin to engineering; and in looking after financing and manufacturing and other post-invention and development activities, he was innovating."
Getty By Jacquelyn Smith The job interview was born in 1921, when Thomas Edison created a written test to evaluate job candidates' knowledge. Since then, the process has come a long way. "As the ...