Alexander Graham Bell.

Alexander Graham Bell was born in Edinburgh city at Scotland in the year 1847. His mother was deaf. His. Father was a teacher for the deaf.Graham  Bell had his elementary education only for 5 year.
  He worked as a teacher for the deaf children. While he was teaching he started his research. Once he tried to send some messages through a wire. He did not succeed. However, he continued his research. As a result he succeeded in sending human voice through wire in 1876. The Telephone was invented. His friend Watson helped him in his research. Do you know what was the first message spoken by Graham Bell in his Telephone?.
He said " Watson,come here,I want to see you".
Graham Bell was working with sound carrying equipment vin his Research Laboratory at Boston in America.
 Accidently  acid from the equipment fell on his dress.
Immediately he called his assistant "Watson"
Watson, please come here".
Watson who was working in a room on the first floor was shocked to hear Graham Bell's voice through the Equipment.
He immediately ran to the ground floor. He entered Graham Bell's room and shouted. "The Equipment is working."
This is how the telephone was invented.