Title: Invention of the Telephone — ETEC540: Text Technologies
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Invention of the Telephone
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Content: The telephone works by converting sound waves into electrical signals and by converting electrical signals into sound waves. The history of the telephone is controversial because although many inventors were involved in performing pioneering experiments in voice transmission over a wire, only Alexander Graham Bell obtained a patent for the telephone in March 1876. ( http://en.wikipedia.org/wiki/Telephone)
Alexander Graham Bell who was born in Scotland worked as a professor of vocal physiology at Boston University in Boston, Massachusetts. As a professor, he trained teachers in how to teach the deaf mutes how to speak and he performed research with speech and electricity. The first bi-directional transmission of speech was made by Bell to his assistant on March 10, 1876, which was followed by the first long distance phone call which was made by Bell to his assistant on August 10, 1876. Then, Bell created a primitive telephone and a patent was obtained for it on January 30, 1877. This telephone transmitted weak sounds and one needed to place one’s ear close to the earphone to be able to hear. Bell went on to produce commercial telephones, made many improvements to them, and laid the ground work for the development of the telephone industry (http://en.wikipedia.org/wiki/Invention_of_the_telephone)
The telephone was a very important invention of the nineteenth century which helped improve communications between people at a distance. The first telephone exchange that linked many people who had telephones together so that they could communicate by telephone was implemented in Hartford, Connecticut in 1877 and the first telephone exchange that linked two cities was implemented in 1883. This exchange connected the cities of New York and Boston. (