The original tin-foil phonograph which Edison Invented August 12, 1877 and completed on August 15 of that year. The first phrase spoken by the human voice and reproduced mechanically by the phonograph was “mary had a little lamb.”

Notes

  1. autismparent reblogged this from engineeringhistory and added:
    Hard to believe that this little gadget started sound recordings
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    ‘Nov. 21, 1877, Edison announced his invention of a sound-recording device. The hand-cranked, tinfoil covered...
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