Tuesday, May 29, 2012

Telephone Invented by Alexander Graham Bell

How was the telephone invented?

            The telephone was become an indispensable part of our life. Can you imagine your life without the telephone? The telephone is used every where, in business, offices, homes and factories.
Alexander Graham Bell

            The world telephone has been deriving fro the Greek words tele meaning far and phone meaning sound. Thus, the word telephone means a device that carries sound to distant places. The story of the invention of the telephone is very interesting. Let us go back to June 2, 1875, when Alexander graham bell was working along with his assistant Thomas Watson on some problem related to telegraphy. Bell was on the telegraphic receiver in one room, whereas his assistant was in another room. Watson created some vibrations on an iron strip. When bell rushed to the other room, he found the iron strip vibration between the poles of a magnet was producing electric current in the connecting wire. It was this historic observation that led to the birth of telephone. Graham bell first demonstrated the telephonic conversation on March 10, 1876.

            Do you know how the telephone works? The telephone consists of two main parts the mouthpiece and the earpiece. The mouthpiece of the telephone works as a transmitter whereas the earpiece works as a receiver. Both are enclosed in one cage and are connected by a line wire. When we speak into the mouthpiece, a diaphragm attached to it starts vibrating. In accordance with produced. The telephone line wire to the receiver of another telephone carries their current. This varying current produces vibrations in the diaphragm attached tot eh receiver, which is then converted into replicas of the original sound waves. As a result the person at the other end is able to receive the voice of the speaker. The same process is repeated between our receiver and the mouthpiece of the telephone t the other end. In this way, two people can talk with each other on the telephone.

            Today, each country has a vast network of telephone lines and telecommunication satellites. You can now talk to a person on the other side of the globe because of this invention by Alexander Graham Bell.

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