The telephone was invented by using the vibrations of a sound wave. When the sound waves reach the ear of the person at the other end of a telephone they get the same effect as they would have, if they came directly from the speaker's mouth.
The story of the invention isa very dramatic one. On 2nd June, 1875 Alexander Graham Bell was experimenting with the idea of sending several telegraph messages over the same wire at the same time. In his experiment he was using a set of spring-steel reeds and working with the receiving set in one room. Thomas Watson, his assistant operated the sending set in the other room. Suddenly Watson plucked a reed of steel to make that vibrate and it produced a twanging sound. Bell came in and asked Watson to do the same thing without changing anything. Then he found that while the steel rod had been vibrating over the magnet it had caused a current of varying strength to flow through the wire and this made the reed in Bell's room vibrate and produce twanging sound.
The very next day the first telephone was made and the voice sounds could be recognized over the first telephone line. In March 10th, 1876 the first sentence over the telephone was successfully heard.
The story of the invention isa very dramatic one. On 2nd June, 1875 Alexander Graham Bell was experimenting with the idea of sending several telegraph messages over the same wire at the same time. In his experiment he was using a set of spring-steel reeds and working with the receiving set in one room. Thomas Watson, his assistant operated the sending set in the other room. Suddenly Watson plucked a reed of steel to make that vibrate and it produced a twanging sound. Bell came in and asked Watson to do the same thing without changing anything. Then he found that while the steel rod had been vibrating over the magnet it had caused a current of varying strength to flow through the wire and this made the reed in Bell's room vibrate and produce twanging sound.
The very next day the first telephone was made and the voice sounds could be recognized over the first telephone line. In March 10th, 1876 the first sentence over the telephone was successfully heard.
