Alexander Graham Bell was an influential scientist, engineer and (invent). He was born on March 3, 1847 in Edinburgh, Scotland. He is widely credited with the invention of the first telephone. Bell's mother and wife(be)both deaf, which had an effecthis work.
When he was 23, Bell and his parents moved to Canada. Bell studied the human voice and worked with different schools fordeaf. He experimented with sound, working with sound, working with equipment used to send different(message)and record sound. He worked on acoustic telegraphy(声报机)with an electrical designer (name)Thomas Watson.
On February 14, 1876, Bell and Elisha Gray, an American electrical engineer, both filed patents(申请专利)covering the transmission (传送)of sounds telegraphically. Finally, Bel(give)the patent. A few days(late), he succeeded in(get)his telephone to work.
Bell improved the design and by 1886 more than 150,000 people owned telephones in the United States. He once said, “The day will come when the man at the telephone will be able to see the distant person to he is speaking.”
