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The Telephone System
Beginning of paper
The telephone is one of the most creative and prized inventions in the
world. It has advanced from its humble beginnings to its wireless communication
technology today and for the future. The inhabitants of the earth have long
communicated over a distance, which has been done by shouting from one hilltop
or tower to another. The word .... Middle of paper
.... plastic held above a thicker, hollow metal disk. This plastic disk
is electrically charged, and creates an electric field. The sound waves from
the caller's voice cause the plastic disk to vibrate, changing the distance
between the disks, thus changing the intensity of the electric field. These
variations are translated into an electric current which travels across the
telephone lines. The receiver of a telephone is composed of a ....
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Number of words: 904
Number of pages: 4 (approx. 250 words per double-spaced page)
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