On this day, 133 years ago, on December 29, 1892 (November 11, 1892 in the lunar calendar), Thomas Edison obtained a patent for the radio. On February 11, 1847, Thomas Edison was born. On December 29, 1892, Thomas Edison obtained the patent for the radio. It has 1093 invention patents such as incandescent lamps, phonograph, carbon microphone, movie projector, and camera, and has also established the world's first industrial research laboratory. During World War I, he served as chairman of the Naval Advisory Council, directing research on torpedoes and anti-submarine equipment. Until the age of 80, he was still studying extracting rubber from grasses in his country. He passed away on October 18, 1931. Comment: Famous geniuses in the history of technology