| slovo | definícia |
Phonautograph
(gcide) | Phonautograph \Pho*nau"to*graph\, n. [Phono- + Gr. a'yto`s self
+ -graph.] (Physics)
An instrument by means of which a sound can be made to
produce a visible trace or record of itself. It consists
essentially of a resonant vessel, usually of paraboloidal
form, closed at one end by a flexible membrane. A stylus
attached to some point of the membrane records the movements
of the latter, as it vibrates, upon a moving cylinder or
plate.
[1913 Webster] |
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