On December 7, 1877 Thomas Edison demonstrated his phonograph at the New York City offices of the nation's leading technical weekly publication, Scientific American. The following report set off ...
For more than 100 years, the basic design of light bulbs followed Edison’s original 1879 invention ... cylinder phonograph records, nickel-iron alkaline electric storage batteries, and improvements to ...
In 1877, Thomas Alva Edison (1847 – 1931) invented the tin foil phonograph – a machine that ... Édouard-Léon Scott de Martinville (1817-1879) In 2008, audio historians Patrick Feaster ...
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A 1932 Interview With Thomas Edison's Lab Assistant Who Helped to Make the First Viable Light Bulb in 1879This is a video recording of Francis Jehl discussing his experience working with Thomas Edison in 1879 and helping to make the first practically viable light bulb in history.
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