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microphone |
 | | microphones, which are the most widely used microphones, have a permanently charged dielectric between the two electrodes and thus generate voltages when the electrodes vibrate. |
| | For example, in the dynamic microphone, the diaphragm is attached to a light movable coil that generates a voltage as it moves back and forth between the poles of a permanent magnet. |
| | Emile Berliner - Emile Berliner Born: 1851 Birthplace: Hanover, Germany Microphone and gramophone—The Berliner... |
| www.factmonster.com /id/A0833054 (330 words) |
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