While conducting tests on the telegraph, Alexander Graham Bell
n March 10th, 1876, three days after his patent was granted, Bell made the first telephone call from his Boston home. Speaking through mouthpiece M to his assistant Thomas Watson who was listening on speaker S in the next room, Bell said: "Mr. Watson, come here; I want you." As with most "firsts", there was strong contention regarding who actually invented the telephone first.
Bell was born in a family of phoneticians and elocutionists. His mother began losing her hearing when he was twelve, which only deepened his passion for studying sound. He taught the hearing-impaired and deaf, including Helen Keller.