Thomas Alva Edison was a scientist, inventor, and businessman who developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, electric light bulb. He was one of the first inventors to apply the principles of mass production and is often credited with the creation of the first industrial research laboratory.
21
Nov
IT WAS EDISON’S SOUND INVENTION!
The Phonograph, a device for both recording and replaying
sound, invented by Thomas A. Edison was introduced on
this date in 1877.
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