Think of three questions you would ask about Alexander Graham Bell. Read and see if you can answer.
Alexander Graham Bell was a very important scientist, engineer and inventor. He was born on March 3, 1847 in Edinburgh, Scotland, and he died on August 2, 1922 at the age of 75.
Bell's mother and wife were both deaf, and this had a big effect on his work. Because of them, he started to think about the sounds he could hear and they could not.
Alexander had great hearing and became an excellent piano player at a young age. When he was 23, Bell and his parents moved to Canada, where he studied the human voice and worked with many schools for deaf people.
Bell experimented with sound, working with devices such as the `harmonic telegraph', which was used to send messages over a single wire. He worked very hard on sound technology with his assistant, an electrical designer called Thomas Watson.
On February 14, 1876, Bell and an American electrical engineer named Elisha Gray both asked for patents with the U.S. Patent Office. It is not clear who was first, but it was Bell who got the patent in the end. A few days later, he made his telephone work using some ideas similar to Gray's ideas. Bell's first words with the working telephone were spoken to his assistant: He said: "Mr Watson, come here. I want to see you."
He improved the design and by 1886 more than 150000 people owned telephones in the United States. The device was very successful, and it started a new era for long-distance communication. ОТВЕТИТЬ ПО ТЕКСТУ НА ВОПРОСЫ . When was Alexander Graham Bell born?
2. Who had problems with hearing in Bell's family?
3. What instrument did Bell play?
4. Who did Bell work with?
5. What were Bell's first words on the telephone?