Lee De Forest, Us Radio Pioneer is a photograph by Sheila Terry which was uploaded on May 6th, 2013.
Lee De Forest, Us Radio Pioneer
Lee De Forest (1873-1961), American radio pioneer, holding the triode valve, or Audion tube, that he invented. De Forest studied at Yale, gaining his... more
by Sheila Terry
Title
Lee De Forest, Us Radio Pioneer
Artist
Sheila Terry
Medium
Photograph
Description
Lee De Forest (1873-1961), American radio pioneer, holding the triode valve, or Audion tube, that he invented. De Forest studied at Yale, gaining his doctorate with a thesis on radio waves. In 1907 he patented the Audion tube. This was an adaptation of a diode, with a third electrode between the cathode and anode. The Audion was used as a detector of radio signals, an amplifier of audio and an oscillator for transmitting. In 1913, AT&T installed audions to boost voice signals as they crossed the US continent and not long after, they were being used in radios. De Forest is considered to be one of the fathers of the electronic age.
Uploaded
May 6th, 2013
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