Lee de Forest's father was a minister and hoped that his son would follow in his footsteps. In order to be trained for this calling, de Forest left Alabama for prep school in Massachusetts. His life ...

We live in an era of mass media. Thousands of movies, television shows, music downloads and radio programs are available instantly at the click of a computer button. Sadly, many inventors who paved ...

In my humble opinion, the vacuum tube rates among the most important technological inventions of the past century. It is considered by most to mark the birth of the electronic age, and until the ...

Lee De Forest invented the audion, a vacuum tube device that could take a weak electrical signal and amplify it into a larger one. The audion helped AT&T set up coast-to-coast phone service, and it ...

Ranked as one of the most important innovations in electronics in the first half of the 20th century, Lee De Forest's valve, also called triode, audion, or three-electrode vacuum tube, amplified ...

Typed letters and manuscript signed in black ink on unlined paper. Lee de Forest was an American inventor, self-described "Father of Radio", and a pioneer in the development of sound-on-film recording ...