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science > timeline > scientists > 19th, 20th century > USA
Thomas Alva Edison 1847-1931
Thomas Alva Edison USA 1847-1931
Edison invented or refined devices that made a profound impact on how people lived.
The most famous of his inventions was the incandescent light bulb (1878), which would revolutionize indoor lighting and forever separate light from fire.
He also developed the phonograph (1877), the central power station (1881), the motion-picture studio (1892) and system for making and showing motion pictures (1893), and alkaline storage batteries (1901).
Edison improved upon the original designs of the stock ticker, the telegraph, and Alexander Graham Bell's telephone.
He was one of the first to explore X-rays, and in 1875, he announced his observation of "etheric force" -- radio waves -- although his claim would be rejected by the scientific community. http://www.pbs.org/wgbh/theymadeamerica/whomade/edison_lo.html
http://www.pbs.org/wgbh/theymadeamerica/whomade/edison_lo.html https://www.pbs.org/wgbh/americanexperience/features/key-figures-eastmans-life/
https://www.npr.org/sections/thetwo-way/2015/05/05/
http://www.npr.org/sections/thetwo-way/2015/05/05/
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