Invention of the telephone biography of williams brothers

Bell, are you going to the Centennial? The magneto telephone that Bell later demonstrated at the Centennial Exposition in June still had a flaw in its design, however, which would not be corrected for another six months. The improved telephone was tested in December , it used the same instrument for a transmitter and a receiver, had a range of more than mi, and used no batteries.

That achievement was the culmination of an invention process Bell had begun at least four years earlier. In the s, electricity was cutting-edge technology. Electricity offered the opportunity to create inventions that could lead to fame and fortune. Although Bell had only recently mastered electricity, he had from his youth been an expert on sound and speech.

Born and raised in Edinburgh, Scotland, Bell was the son of Eliza and Alexander Melville Bell, a professor of elocution who had devised a technique called visible speech, a set of symbols that represented speech sounds.

Alexander graham bell family

The elder Bell used the technique to teach the deaf to speak. In Bell took the first of what would be many jobs as a speech and music teacher in Scotland. Teaching during the day, he conducted experiments at night on the pitch of vowel sounds using tuning forks. He also became interested in building a machine to produce vowel sounds electronically.