A phonograph is a device for the mechanical and analog recording and reproduction of sound. It was invented in 1877 by Thomas Edison. The sound vibration waveforms are recorded as corresponding physical deviations of a spiral groove engraved, etched, incised, or impressed into the surface of a rotating cylinder or disc, called a "record". To recreate the sound, the surface is similarly rotated while a playback stylus traces the groove and is therefore vibrated by it, very faintly reproducing the recorded sound.

Source: Wikipedia

• Choice "A": Thomas Edison 68% of users selected this choice.
• Choice "B": Thomas Ellis 2% of users selected this choice.
• Choice "C": Thomas Eldridge 4% of users selected this choice.
• Choice "D": Alexander Graham Bell 26% of users selected this choice.