Philo Farnsworth - Television Inventor at Age 21

Philo came up with the idea of an electronic television at 14 years old in 1920. He had a working model by age 21. Below are some links for more information:

1. http://philotfarnsworth.com/
   
2. The Boy Genius and the Mogul: The Untold Story of Television
   
3. About.com Bio
   
4. Time 100 Profile