Category:Phonograph

Pho"no*graph, n. Etym: [phono- + -graph.]

1. A character or symbol used to represent a sound, esp. one used in Phonography.

2. (physics)

Defn: an instrument for the mechanical registration and reproduction Of audible sounds, as articulate speech, etc. It consists of a Rotating cylinder or disk covered with some material easily indented, As tinfoil, wax, paraffin, etc., above which is a thin plate carrying A stylus. As the plate vibrates under the influence of a sound, the Stylus makes minute indentations or undulations in the soft material, And these, when the cylinder or disk is again turned, set the plate In vibration, and reproduce the sound.