Alexander Graham Bell is one of the well known of his invention the telephone and the microphone. In 1872 Alexander Graham Bell founded a school for the people who can not hear ,The school became a part of the Boston University, where Alexander was appointed professor of vocal physiology. He became a naturalized U.S. citizen in 1882
Alexander Graham Bell was born 1847 and died in August 2, 1922.
1872 Bell founded a school for deaf-mutes in Boston, Massachusetts1874 while working on a multiple telegraph, he developed the basic ideas for the telephone
1875 files first patent for telegraphy
1876 when the first complete sentence was transmitted
1877 formed Bell Telephone Company to operate local telephone exchange operation
1880 invented the photo phone, which transmits speech by light rays
1882 acquired a controlling interest in the Western Electric Company, Elisha Gray's company
1885 formed American Telephone and Telegraph Company to operate the long distance network.
1886 first wax recording cylinder, introduced, formed the basis of the modern phonograph.
1896 elected first President of National Geographic Society
1907 he devised a kite capable of carrying a person. With a group of associates
1917 developed "hydrodrome," at (70 mph) the fastest boat in the world for many years
His inventions charge the way of technology. The Telephone has help every around the world. To be able to talk to someone in another country shows how much work he put in to it.
Bibliography
http://www.ideafinder.com/history/inventors/bell.ht (22.06.11)
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