Alexander Graham Bell
Alexander Graham Bell (March 3, 1847 – August 2, 1922) was a famous scientist, inventor and engineer. He is best known for his invention of the telephone. Shortly after his 12th birthday, his mother began to grow deaf. He invented a form of sign-language to communicate with his mother. Bell was awarded the first US patent for the telephone in 1876. In less than 10 years, over 150,000 people owned telephones, thanks to his invention. Bell also invented the first metal detector. Did you know that although Bell had no formal training on the piano, he eventually mastered the instrument?