• Thumbnail for Lee de Forest
    Lee de Forest (August 26, 1873 – June 30, 1961) was an American inventor and an early pioneer in electronics of fundamental importance. He invented the...
    67 KB (8,949 words) - 20:47, 11 June 2024
  • Thumbnail for Calvert DeForest
    the great-nephew of inventor Lee de Forest. DeForest grew up in Bay Ridge, Brooklyn. He was born to Calvert Martin DeForest, M.D., a physician who died...
    15 KB (1,701 words) - 07:29, 31 March 2024
  • Thumbnail for Nora Stanton Barney
    posthumously advanced to ASCE Fellow status. In 1908, she married the inventor Lee de Forest, and helped to manage some of the companies he had founded to promote...
    9 KB (869 words) - 10:47, 28 May 2024
  • Thumbnail for DeForest Kelley
    Irish ancestry. Kelley was named after pioneering electronics engineer Lee de Forest. He later named his Star Trek character's father "David" after his own...
    35 KB (2,507 words) - 03:30, 24 May 2024
  • Thumbnail for Audion
    Audion (redirect from De Forest tube)
    or amplifying vacuum tube invented by American electrical engineer Lee de Forest as a diode in 1906. Improved, it was patented as the first triode in...
    24 KB (2,612 words) - 16:17, 8 June 2024
  • College Radio Station)". libguides.union.edu. De Lee Forest. Father of Radio: The Autobiography of Lee de Forest (1950). Gleason L. Archer Personal Papers...
    70 KB (8,344 words) - 01:31, 23 May 2024
  • Thumbnail for AM broadcasting
    included Ernst Ruhmer, Quirino Majorana, Charles "Doc" Herrold, and Lee de Forest. Advances in vacuum tube technology (called "valves" in British usage)...
    74 KB (9,160 words) - 00:21, 11 June 2024
  • Herman Adolf DeVry (November 26, 1876 – March 23, 1941) was an American inventor, aviator, and colleague of Lee de Forest. DeVry is credited with creating...
    6 KB (690 words) - 16:46, 8 June 2024
  • Thumbnail for Eric Tigerstedt
    did this by making major improvements to the vacuum tube design of Lee de Forest, increasing the amplification capacity substantially. In February–March...
    17 KB (2,276 words) - 21:37, 30 May 2024
  • Thumbnail for Triode
    heated filament or cathode, a grid, and a plate (anode). Developed from Lee De Forest's 1906 Audion, a partial vacuum tube that added a grid electrode to the...
    30 KB (3,670 words) - 17:34, 8 June 2024
  • Thumbnail for Hollywood Walk of Fame
    25, 2019. Retrieved January 25, 2024. "Lee de Forest". Britannica. Retrieved January 25, 2024. "Lee de Forest". Hollywood Walk of Fame. October 25, 2019...
    105 KB (10,161 words) - 17:06, 5 June 2024
  • Thumbnail for Tim Berners-Lee
    Sir Timothy John Berners-Lee OM KBE FRS RDI FRSA DFBCS FREng (born 8 June 1955), also known as TimBL, is an English computer scientist best known as the...
    48 KB (4,505 words) - 17:01, 23 May 2024
  • Thumbnail for Invention of radio
    including Augusto Righi and his student Guglielmo Marconi, Alexander Popov, Lee de Forest, and Jagadish Chandra Bose. Lodge at the time seemed to see no value...
    107 KB (12,803 words) - 20:02, 29 May 2024
  • Thumbnail for Transmitter
    Meissner around 1912, based on the Audion (triode) vacuum tube invented by Lee De Forest in 1906. Vacuum tube transmitters were inexpensive and produced continuous...
    23 KB (2,455 words) - 02:13, 20 March 2024
  • Thumbnail for Amplitude modulation
    Valdemar Poulsen, Ernst Ruhmer, Quirino Majorana, Charles Herrold, and Lee de Forest, were hampered by the lack of a technology for amplification. The first...
    35 KB (4,576 words) - 04:14, 19 April 2024
  • the De Forest System" by Herbert T. Wade, The American Monthly Review of Reviews, June 1907, pp. 681–685. Father of Radio (autobiography) by Lee de Forest...
    120 KB (14,190 words) - 17:46, 10 June 2024
  • sound-on-film system developed by inventors Lee de Forest and Theodore Case in the early 1920s. In 1919 and 1920, de Forest, inventor of the audion tube, filed...
    59 KB (6,998 words) - 21:27, 10 February 2024
  • Thumbnail for Control grid
    is surrounded in turn by the anode. The control grid was invented by Lee De Forest, who in 1906 added a grid to the Fleming valve (thermionic diode) to...
    6 KB (878 words) - 20:21, 11 January 2023
  • Thumbnail for Telecommunications
    Meucci and Alexander Graham Bell, inventors of radio Edwin Armstrong and Lee de Forest, as well as inventors of television like Vladimir K. Zworykin, John...
    88 KB (9,252 words) - 13:50, 10 June 2024
  • March 1, 1925, as part of the Song Car-Tunes series. Max Fleischer, Lee de Forest, Hugo Riesenfeld, and Edwin Miles Fadiman formed Red Seal Pictures to...
    3 KB (215 words) - 00:39, 7 May 2024
  • Thumbnail for Donald Sutherland
    Daughter". In 1966, Sutherland appeared in the BBC TV play Lee Oswald-Assassin, playing a friend of Lee Harvey Oswald, Charles Givens (even though Givens himself...
    41 KB (3,667 words) - 11:23, 5 June 2024
  • Thumbnail for Spike Lee
    Shelton Jackson "Spike" Lee (born March 20, 1957) is an American film director, producer, screenwriter, actor, and author. His work has continually explored...
    70 KB (6,598 words) - 19:24, 22 May 2024
  • Thumbnail for Amplifier
    which could amplify was the triode vacuum tube, invented in 1906 by Lee De Forest, which led to the first amplifiers around 1912. Today most amplifiers...
    56 KB (7,058 words) - 21:05, 7 April 2024
  • (1874–1944), Austrian actor Lee De Forest (1873–1961), American inventor with over 180 patents to his credit Léonard Forest (born 1928), Acadian filmmaker...
    7 KB (993 words) - 17:09, 21 January 2024
  • Thumbnail for Cavity magnetron
    Cavity magnetron (category CS1 German-language sources (de))
    Audion by Lee de Forest in 1906. Albert Hull of General Electric Research Laboratory, USA, began development of magnetrons to avoid de Forest's patents...
    52 KB (6,431 words) - 02:18, 15 May 2024
  • Thumbnail for Crooner
    University. Retrieved 24 June 2010. Father of Radio: The Autobiography of Lee de Forest, 1950, page 351. Irving Settel, A Pictorial History of Radio, p. 58...
    9 KB (1,044 words) - 17:44, 5 June 2024
  • Thumbnail for Spark-gap transmitter
    Popov in Russia, Eugène Ducretet in France, Reginald Fessenden and Lee de Forest in America, and Karl Ferdinand Braun, Adolf Slaby, and Georg von Arco...
    121 KB (13,078 words) - 17:26, 8 June 2024
  • An Audion is a wireless signal detector device invented by Lee De Forest in 1906. Audion may also refer to: Audion (album), an electronic music album...
    457 bytes (95 words) - 02:47, 9 March 2013
  • Thumbnail for Grid-leak detector
    characteristic and the amplification factor of a vacuum tube. Invented by Lee De Forest around 1912, it was used as the detector (demodulator) in the first...
    20 KB (2,282 words) - 00:35, 18 May 2023
  • Thumbnail for My Old Kentucky Home (1926 film)
    Old Kentucky Home" (1853) by Stephen Foster, and was recorded in the Lee de Forest Phonofilm sound-on-film system. My Old Kentucky Home appears to be the...
    4 KB (419 words) - 01:46, 27 March 2024