Tag Archives: Thomas Edison

EdisonPhonograph

On this day… Thomas Edison patents the Phonograph!

On this day… Thomas Edison patents the Phonograph!

On this day in 1877, Thomas Edison patented the phonograph. Phonographs were among the first devices to both record and play audio recordings. Phonographs record audio using needles, which use sound waves to create etches into a foil-covered cylinder. As the cylinder rotates, a second needle runs along these etches and plays the recorded audio.

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