Edison (1847~ 193 1) was born in a small town in Ohio, USA. He has been curious since he was a child and likes to ask why. He only went to school for three months in his life. His mother is his first teacher, teaching him English, arithmetic, physics, chemistry and so on. Edison likes doing experiments. /kloc-at the age of 0/2, he began to sell newspapers on the train to earn money to buy experimental supplies. /kloc-at the age of 0/6, he studied telegraph technology and became a telegraph operator, from which he began the road of invention and creation. He started a factory, and later, he set up laboratories in Menlo Park and the suburbs of West Orange, focusing on inventions. He never stopped inventing all his life.
Edison is known as "the king of inventions in the world". In his life, he patented 1300 inventions. According to statistics, there are actually more than 2,000 inventions. In his early days, he was mainly engaged in the study of telegrams. On the basis of double telegraph, he invented double telegraph, automatic telegraph and quadruple telegraph. In Menlo Park, he invented the talking machine-the phonograph, and the electric light that brought light to human night. He also improved the telephone, movie camera and battery on the original basis. Edison's invention is a great wealth of mankind.