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1985 · Thriller · 2h 40mLearn about the invention, development, and features of the telephone, an instrument for transmitting and receiving human voice. Explore the functional components of the modern telephone, such as power source, switch hook, dialer, ringer, transmitter, receiver, and anti-sidetone circuit.
A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly.
Philipp Reis, 1861, constructed the first telephone, today called the Reis telephone. Alexander Graham Bell was awarded the first U.S. patent for the invention of the telephone in 1876. Elisha Gray, 1876, designed a telephone using a water microphone in Highland Park, Illinois.
Nov 9, 2009 · Learn about the life and achievements of Alexander Graham Bell, who revolutionized communication with his invention of the telephone. Find out how he overcame legal challenges, worked on other projects and helped the deaf community.
Alexander Graham Bell, inventor who patented the telephone in 1876, lecturing at Salem, Massachusetts (top), while friends in his study at Boston listen to his lecture via telephone, February 12, 1877.
May 21, 2021 · Learn about the history and evolution of the telephone, from its origins in sound and telegraphy to its modern forms. Discover the role of Alexander Graham Bell, Elisha Gray, and other pioneers in the invention and development of this communication device.
3 days ago · Alexander Graham Bell (born March 3, 1847, Edinburgh, Scotland—died August 2, 1922, Beinn Bhreagh, Cape Breton Island, Nova Scotia, Canada) was a Scottish-born American inventor, scientist, and teacher of the deaf whose foremost accomplishments were the invention of the telephone (1876) and the refinement of the phonograph (1886).
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