carbon microphone

car·bon mi·cro·phone

C c

Definitions of carbon microphone words

noun carbon microphone a microphone in which a diaphragm, vibrated by sound waves, applies a varying pressure to a container packed with carbon granules, altering the resistance of the carbon. A current flowing through the carbon is thus modulated at the frequency of the sound waves 3
noun carbon microphone A microphone containing carbon granules, whose electrical resistance varies with pressure. 0

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This term is known only to a narrow circle of people with rare knowledge. Only 7% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

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