A brief biography of Edison

Edison (1847 ~ 193 1) is a famous American inventor and entrepreneur. 1847 February 1 1 was born in a peasant family in Milan, Ohio, USA. I went to school at the age of eight and only studied for three months, so I had to drop out of school and go home. His mother used to be a rural teacher, helping him to learn by himself. 12 years old, family life is difficult, he started selling newspapers on the train. /kloc-when he was 0/6 years old, he invented the automatic timing transmitter, and then inventions continued. During his lifetime, * * * completed more than 2,000 inventions, and 1928 was awarded the special gold medal of the US Congress. 193 1 year1October18th, Edison died in west orange at the age of 84. 193 1 year1October 2 1 day, lights were turned off all over the United States to show condolences.

Scientific achievements

Edison was a world-famous great inventor. The invention of his life is unparalleled in the world. Edison's main contributions are:

1. Edison's most important contribution to science and technology was the invention of the phonograph and the incandescent lamp.

Today, it is hard for us to imagine that we can live without electricity-we can't turn on the lights, listen to records, watch movies or make phone calls. However, all these things that we take for granted are the result of one person's actual invention-Thomas Edison.

Edison also made many famous inventions in movies, trams, mining, architecture and weapons.

Edison also observed thermionic emission in vacuum bulb, which was later called "Edison effect". The discovery of thermionic emission laid the foundation for the development of electron tubes.