Historical artwork of a man using a Bell telephone

Historical artwork of a man using a Bell telephone

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Credit: SHEILA TERRY/SCIENCE PHOTO LIBRARY

Caption: Bell telephone. Historical artwork of a man using a Bell telephone. In this original telephone system, the speaker and receiver were identical. The speaker consisted of a diaphragm which converted sound waves into an oscillating electric current. The receiver converted the current back into sound waves. This telephone was invented by Alexander Graham Bell (1847-1922) who filed the patent in 1876. However, his priority as absolute inventor was questioned by Elisha Gray of Western Electric who similarly filed a patent on the same day, 14th February. After long litigation, Bell won "the most valuable patent ever issued in the US".

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Keywords: 19th century communications, alexander's telephone, artwork, bell, bell telephone, communication, communications, historical, history of science, technology, telecommunication, telecommunications, telephone

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