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jan 1, 1877 - Phonograph

Description:

Thomas Edison
Shortly after Cros found that he could convert the recording back into hearable sound, Thomas Edison announced his Phonograph, which recorded sound waves by indenting them into a sheet of tinfoil so that they could be played back immediately which relegated Cros’s less direct method to unimportance.

Added to timeline:

Date:

jan 1, 1877
Now
~ 149 years ago

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