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Lee de Forest

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Lee de Forest
Lee de Forest c. 1904
Born(1873-08-26)August 26, 1873
DiedJune 30, 1961(1961-06-30) (aged 87)
Alma materYale College (Sheffield Scientific School)
Known forThree-electrode vacuum-tube (Audion), sound-on-film recording (Phonofilm)
RelativesCalvert DeForest (grandnephew)
AwardsIEEE Medal of Honor (1922)
Elliott Cresson Medal (1923)
IEEE Edison Medal (1946)

Lee de Forest (1873-1961) was an American inventor. His inventions helped to create radio and television. He is sometimes described as the "Father of Radio".[1] In his lifetime, he had created over 300 inventions.

Early Life[change | change source]

He was born in 1873 in Council Bluffs, Iowa. His father was a minister. He Studied at Yale University. He studied science and got a Ph.D. in 1899.

The Audion[change | change source]

In 1906, He invented a device called the Audion. It was a vacuum tube that could boost weak electrical signals. It was critical for making radio and television to function properly. It contained three parts: a filament, a plate, and a grid.[2]

The filament heated up and produced electrons. The plate collected electrons. The grid in the center controlled the flow of electrons. It allowed the Audion to amplify signals. Audion was included in radios, televisions, and early computers. It helped make these inventions more practical and popular.

Radio and Television[change | change source]

He used Audion to create some of the early radio broadcasts. In 1907, he broadcast music on the radio in New York City. He also broadcast from the Metropolitan Opera House.

References[change | change source]

  1. "De Forest—Father of Radio" by Hugo Gernsback, Radio-Craft, January 1947, p. 17.
  2. "The Audion; A Third Form of the Gas Detector (1908)". earlyradiohistory.us.

Other websites[change | change source]