Thomas Edison, Us Inventor #3 is a photograph by Humanities & Social Sciences Librarynew York Public Library which was uploaded on May 2nd, 2013.
Thomas Edison, Us Inventor #3
Thomas Alva Edison (1847-1931), US inventor, in his laboratory. Edison is famous for inventing or improving devices such as the phonograph and the... more
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Thomas Edison, Us Inventor #3
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Humanities & Social Sciences Librarynew York Public Library
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Thomas Alva Edison (1847-1931), US inventor, in his laboratory. Edison is famous for inventing or improving devices such as the phonograph and the electric light bulb. Edison was one of the first inventors to build research laboratories to make and develop inventions. He also founded several companies, and filed over 1000 patents. Other work included improvements to telegraphy, cameras, and motion picture cameras, as well as promoting his DC electrical distribution systems. He also discovered the Edison Effect, on which thermionic valves are based.
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May 2nd, 2013
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