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Alexander Graham Bell In 1876 at the age of 29 Alexander Graham Bell invented his telephone Bell might easily have been content with the success of his invention His many laboratory notebooks demonstrate however that he was driven by a genuine and rare intellectual curiosity that kept him regularly searching striving and wanting always to learn and to create Born on March 3 1847 in Edinburgh Scotland Alexander Graham Bell was the son and grandson of authorities in elocution and the correction of speech Educated to pursue a career in the same specialty his knowledge of the nature of sound led him not only to teach the deaf but also to invent the telephone In the 1870s two inventors Elisha Gray and Alexander Graham Bell both independently designed devices that could transmit speech electrically the telephone Both men rushed their designs to the patent office within hours of each other Alexander Graham Bell patented his telephone first Elisha Gray and Alexander Graham Bell entered into a famous legal battle over the invention of the telephone which Bell won The telegraph and telephone are both wire-based electrical systems and Alexander Graham Bells success with the telephone came as a direct result of his attempts to improve the telegraph When Bell began experimenting with electrical signals the telegraph had been an established means of communication for some 30 years Although a highly successful system the telegraph with its dot-and-dash Morse code was basically limited to receiving and sending one message at a time Bells knowledge of the nature of sound and his understanding of music enabled him to conjecture the possibility of transmitting multiple messages over the same wire at the same time Although the idea of a multiple telegraph had been in for some time Bell offered his own musical or harmonic approach as a possible practical solution His harmonic telegraph was based on the principle that several notes could be
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