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On This Day

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Thomas Alva Edison demonstrating his tinfoil phonograph, photograph by Mathew Brady, 1878.Phonograph invented by Thomas Alva Edison

On this day in 1877, American inventor Thomas Alva Edison made perhaps his most original discovery, the phonograph, and his early recordings were indentations embossed into a sheet of tinfoil by a vibrating stylus.
credit: Britannica

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