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Oerstedt discovers the effect of the magnetic field due to an electric current
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Ampere formula laws of electromagnetism
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the telephone was invented by Antonio Meucci, although the first to try it was Alexander Graham Bell, in 1876,
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Bell exhibited the first functional telephone model, a month before I submitted the patent application, it was accepted on March 7, 1876.
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The exhibition centeria of Philadelphia, here had the opportunity to show all the telephone inventions, this gave a great impulse to the telephone
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from new york and watson, located is san francisco inaugurated it with the same words he said in 1876
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1920, still contained the wooden box was what was holding the wall, in 1934 the phones will be with bell
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Claude Elwood, researcher at Bell Labs, in the period of 1941 and 194, wrote a book that will be the theory of communication and information.
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On June 11, 2002, the United States Congress approved Resolution 269, recognizing that the inventor of the telephone had been Antonio Meucci, who called it a telephon, and not Alexander Graham Bell.
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Bell telephone company; in 1878 the American Speaking telephone company was formed, subsidiary of the Western Union telegraph company, years later the western union telegraph company would be recognized
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in our actuality, we used portable wireless phones, these are small sizes which accompanies us to each place
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In 1871 Meucci could only, due to financial difficulties, present a brief description of his invention, but not formalize the patent before the United States Patent Office.
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they will be installed in new haven, with a manually operated commutation system, these were quickly installed all over the world
