An early sound-recording and playback device that captures audio vibrations as physical grooves on a rotating cylinder or disc. Invented by Thomas Edison in 1877, it was the first machine capable of both recording and reproducing sound.
From Greek phone (sound, voice) + graphein (to write), meaning 'sound writing.' Thomas Edison coined this term in 1877 when he invented the device, following the Greek pattern of scientific nomenclature. The machine literally 'writes' sound waves as physical indentations that can be 'read' back as audio.
The phonograph proves that 'writing' doesn't always mean making marks with ink! Edison's genius was realizing that sound waves could be 'written' as physical grooves, then 'read' back by a needle. This connects to telegraph (distant writing) and photograph (light writing) — all capturing invisible forces and making them permanent and reproducible.
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