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A brief introduction to bell's life?
Alexander Graham Bell (1March 3, 847-1August 2, 922) was an American inventor and entrepreneur.
He obtained the patent right of the world's first available telephone and founded the Bell Telephone Company (AT & amp; The predecessor of t company). There is still controversy about the inventor of the telephone. On June 5th, 2002, the American Congress decided that Italian antonio meucci was the inventor of the telephone, and the Canadian Parliament passed a resolution on June 25th, 2002, reaffirming that Bell was the inventor of the telephone. Others believe that Elisha Gray was the inventor of the telephone.
Alexander Graham Bell
Alexander Graham Bell was born in Edinburgh.
Bell 1870 immigrated to Canada and arrived in the United States one year later. He became an American citizen on 1882.
Bell himself is an acoustic physiologist and a deaf-mute language teacher. Before him, the German Philip Rice had invented the telephone, but its sound transmission effect was too poor to be used in practice. On March 1876, Bell and his colleagues tested the world's first available telephone.
In addition, Bell also invented an instrument for measuring hearing, an instrument that can be used to find metals in the human body and other inventions.
Bell holds a patent for the invention of the telephone, but it has also been pointed out that antonio meucci, an Italian who immigrated to the United States, was the inventor of the telephone. In resolution 15 of 2002, the US Congress confirmed that antonio meucci was the inventor of the telephone.
Alexander Graham Bell
In addition to the telephone, Alexander Graham Bell also invented a giant kite carrying people, invented a hydrofoil for the Canadian navy to compete with German U-boats in World War II, and improved the phonograph.
Bell is also an American blind and deaf woman writer, educator, philanthropist and social activist Helen Keller, with the longest communication history and the best feelings.
1922 On August 2nd, Alexander Graham Bell died in Badeck.
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