Alexander Graham Bell, who invented the invention and initiative is the world's first telephone.
"Graham Bell" was born March 3, 1847 the Edinburgh city
.The country Scotland receive basic education school Edinburgh, followed by a study at the University of London, and travelled the country Germany. In order to study at the University of wus airport until the end of the degree in the year 1867
.* Pioneer era phone
"Graham Bell" with the idea to have invented the telephone, the hypothesis that one day. Bell noticed that sound is caused by vibration of piano wire. Therefore, it is probably the wire conductor.
With this principle, he has created a free pass to the sound wave as a flat sheet metal which is magnetic. Around and around the magnet coil wire again, and when the sound waves cause vibrations of metal. Vibration causes It flows through a wire, to another receiver, and the receiver has a similar function to change electricity back into the system one at a time. And here is the working hypothesis of the telephone receiver.
"Bell
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