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Thomas Alva Edison

Day in Tech History/ Science

January 17, 1882: Carbon Microphone for Telephone

Jeffrey Powers @geekazine aggregator, apple, carbon microphone, court settlement, day in tech history, diaphragm, ford motor company, historical events, history, IBM, iTunes, mouthpiece, mozy, patent, Podcast, RSS, sherman antitrust act, stitcher, sync, technology history, thomas alva edison, thomas edison, twitter 0 Comments January 17, 2014

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Thomas Alva Edison
Thomas Alva Edison

1882 – Thomas Edison created more tech history when he was granted a patent for the carbon microphone for the telephone. The carbon was in between two cups and attached to the mouthpiece. The diaphragm would change pressure, causing the carbon to be pushed upon. That would send electric current to the other end – which would transpose it back to audio.

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