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The Telephone System
Part 1 of Paper
.... 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 "telephone" originated from a combination of two
Greek words: "tele", meaning fa.... Part 2 of Paper
....ged, 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 flat ring of
magnetic material. Underneath this magnetic ring is a coil of wire where the
electric current flows. Here, the current and magnetic fie.... |
| Number of words: 904 - Approximate pages: 4 |
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