|
Lee De Forest
(1873 -
1961) added a grid electrode to Flemings' valve and created the
triode tube, later improved and called the Audion. This increased
the distance that radio could be received by two orders of
magnitude.
He was a prolific inventor, and was granted more than 300 patents in
the fields of wireless telegraphy, radio, wire telephone,
sound-on-film, picture transmission, and television.
|
|
|
