Elisha Gray and Alexander Graham Bell both the inventors designed devices that could trasmitt speech electrically in 1870. Gramham Bell was first patented his telephone first. Elisha Gray and Alexander Graham Bell entered into a famous legal battle over the invention of the telephone, which Bell won.
When Bell began experimenting with electrical signals, the telegraph had been an established means of communication for some 30 years.
Alexander Graham Bell's notebook entry of 10 March 1876 describes his successful experiment with the telephone. His first words were “Mr. Watson -- come here -- I want to see you."
1 comments:
Such and important inovation I must say. It's really change the world.
Post a Comment