MONROE, La. (KNOE) - On November 29, 1877, young Thomas Edison tested his newest invention the phonograph. It was the first time anyone had recorded sound and played it back. He had given a sketch of ...
Edison Light Bulb, 1879, Smithsonian's National Museum of American History Thomas Edison used this carbon-filament bulb in the first public demonstration of his most famous invention—the light bulb, ...
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