Bell's most famous invention, the telephone, was first patented on March 7, 1876. With this device, Bell was able to transmit sound over a wire, making it possible for people to communicate with ...
When Bell and Thomas A. Watson exhibited their telephone at the Centennial Exposition in Philadelphia in 1876, Henry saw to it that the invention received the Certificate of Merit. Even at the ...
In 1876 Alexander Graham Bell did so and patented the first telephone. An animation is used to show how electromagnets are used in this invention. The social reasons behind the slow adoption of ...
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