United States.
Thomas Alva Edison (February 11, 1847 - October 18, 1931), was born in Milan, Ohio, USA, and died in West Orange, New Jersey, USA . Inventor, entrepreneur.
Edison is the son of a Canadian. His father is a descendant of an American Tory who fled to Canada after the Revolutionary War. He is a farmer who knows carpentry skills. His mother worked as a teacher in the countryside. Edison was the youngest of seven children. Extended information
Thomas Alva Edison: King of Inventions
1. The phonograph was born in 1877. The person who invented the phonograph in the world was the world-famous inventor Thomas Alva Edison. Thomas Alva Edison experimented with a short needle based on the phenomenon that the diaphragm in the telephone microphone would vibrate with the sound of speech, and got great inspiration from it. The speed of speaking can cause the short needle to vibrate in different ways.
2. In 1889, Edison in the United States invented a camera. This camera uses a pointed gear to drive a 19 mm wide unpunched tape. Under the control of a ratchet, it drives the tape to move intermittently while punching holes.
This kind of camera is driven by a motor, and the shutter shaft is linked to a phonograph. The phonograph records the sound when the camera is running. On this basis, another movable camera was invented.
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