Triode vacuum tube was invented by Lee De Forest on November 17, 1906

An electronic device that can amplify electrical signals, paving the way for modern electronics.

The Triode vacuum tube is considered to be one of the most important inventions in the history of electronics. It allowed for amplification of electronic signals, which paved the way for the development of the modern electronic age. The Triode was crucial in the development of radios, televisions, and early computers.

Lee De Forest was an American inventor, scientist, and radio pioneer. He received over 180 patents and is credited with the invention of the Triode vacuum tube.