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===About Microphones===
: [[Sound]] transfers [[information]] which a [[microphone]] converts into an electrical signal.
: [[Microphone]]s use a coil of wire and a [[Permanent Magnet|permanent magnet]] to turn a [[vibration]] into an electrical signal.
: When the receiver [[vibration|vibrates]] the coil of wire moves around the [[Permanent Magnet|permanent magnet]] to make a [[Electrical Current|current]] in the coil of wire.