Telephone - Research Article from Encyclopedia of Science, Technology, and Ethics

This encyclopedia article consists of approximately 10 pages of information about Telephone.
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Historical Development

The term telephone is based on the combination of the Greek words, tele ("distant" or "afar") and phon ("sound" or "voice"); it was first used in France in the 1830s to name a crude acoustic device. By the mid-1800s something akin to a pair of tin cans connected by a taut string was known in the United States as the "lover's telephone." In 1876 Alexander Graham Bell (1847–1922) won a patent for a device that has come to be known as the telephone.

Alexander Graham Bell testing his telephone invention in front of onlookers. Graham won a patent for the device in 1876. (U.S. National Aeronautics and Space Administration.) Alexander Graham Bell testing his telephone invention in front of onlookers. Graham won a patent for the device in 1876. (U.S. National Aeronautics and Space Administration.)

The traditional telephone operates by converting the mechanical energy of sounds carried in the air (the speaker's voice) into electrical impulses for transmission to a receiver. The receiver reverses the process, changing the electrical impulses back into vibrations...

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This section contains 2,858 words
(approx. 10 pages at 300 words per page)
Buy the Telephone Encyclopedia Article
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Encyclopedia of Science, Technology, and Ethics
Telephone from Encyclopedia of Science, Technology, and Ethics. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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