1876 ID Number EM.252599 accession number 49064 catalog number 252599 patent number 174465 Object Name experimental telephone telephone Physical Description wood (base material) brass (posts material) tin (mouthpiece material) brass (brackets material) Measurements overall: 6 1/2 in x 5 in x 11 in 16.51 cm x 12.7 cm x 27.94 cm Related Publication Sewer, Andy Allison, David Liebhold, Peter Davis, Nancy Franz, Kathleen G. He came to the U.S as a teacher of the deaf, and conceived the idea of 'electronic speech' while visiting his hearing-impaired. Bell's study of hearing and speech more strongly influenced his work. Alexander Graham Bell is most well known for inventing the telephone. They were mostly experienced telegraphers trying to make a better telegraph. Bell approached the problem of transmitting speech differently from other telephone inventors like Elisha Gray and Thomas Edison. Using only the existing telegraph lines, Bell was able to conduct the world's first phone call in front of an audience of amazed onlookers. This unit features a single electro-magnet and could be used both as transmitter and receiver. Alexander Graham Bells invention of the telephone in 1876, was a world-changing event which was also a breakthrough in communication. In August 1876, Bell was able to conduct a demonstration of his telephone by using two telegraph offices that were five miles apart. Description Alexander Graham Bell demonstrated several experimental telephones at the Philadelphia Centennial Exposition in 1876. Eliot Elisofon Photographic Archives, African Art.
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