Title: Telephone invented by Alexander Graham Bell in year 1876
Headings: Telephone
Telephone
Content: Telephone invented by Alexander Graham Bell in year 1876
Telephone
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Invented by : Alexander Graham Bell
Invented in year : 1876
The Telephone is a telecommunications device that transmits and receives sound, most commonly the human voice. The device operates principally by converting sound waves into electrical signals, and electrical signals into sound waves. Such signals when conveyed through telephone networks and often converted to electronic and/or optical signals - enable nearly every telephone user to communicate with nearly every other worldwide. The telephone operates on simple principles. A telephone mouthpiece contains a thin metallic coating separated from an electrode by a thin barrier (today we use plastic) which connects to a wire carrying an electric current. When a person speaks into the mouthpiece, the acoustic vibrations from her speech push the metallic coating slightly closer to the electrode, resulting in variations in voltage and therefore a speedy conversion from acoustic to electric energy. The electric pulses are conveyed through a wire to the speaker on the other end, where electric pulses are converted into acoustic energy again. History of the Invention
There are many who were considered to be credited with inventing the telephone include Antonio Meucci, Philip Reis, Elisha Gray and Alexander Graham Bell.