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The Telephone
Beginning of paper
About 100 years ago, Alexander Graham Bell invented by
accident with his assistant Mr. Watson. Over many years, the modern version of
makes the one that Bell invented look like a piece of junk.
Developments in tone dialing, call tracing, music on hold, and electronic
ringers have greatly changed the telephone.
This marvelous inventio .... Middle of paper
.... called the handset. The
handset is usually made out of plastic and inside it are two main components:
the transmitter and the receiver.
THE TRANSMITTER
It is the job of the transmitter to turn the air pressure created by
your sound waves to electrical signals so they can be sent to the other
telephone. The waves hit a thin skin called the diaphragm that is physically
connected to a reservoir of carbon granules. When the pressure hits the
di ....
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Number of words: 1495
Number of pages: 6 (approx. 250 words per double-spaced page)
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