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Lee de Forest was born in 1873 in Council Bluffs, Iowa, the son of Anna Margaret (née Robbins) and Henry Swift DeForest. [1] [2] He was a direct descendant of Jessé de Forest, the leader of a group of Walloon Huguenots who fled Europe in the 17th century due to religious persecution.
The film focused primarily [5] on the three pioneers [6] of radio in America: Lee de Forest, Edwin Howard Armstrong, and David Sarnoff. [7] The program interspersed audio and musical highlights of "old time" radio with the stories, achievements, failures, scams and bitter feuds between each of the main protagonists. [8]
Psychology Today is an American media organization with a focus on psychology and human behavior. The publication began as a bimonthly magazine, which first appeared in 1967. The print magazine's reported circulation is 275,000 as of 2023. [ 2 ]
Phonofilm is an optical 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 his first patents on a sound-on-film process, DeForest Phonofilm, which recorded sound directly onto film as parallel lines. These parallel lines photographically ...
Lee De Forest * 1873 Audion amplifier tube [24] 1977 Vladimir K. Zworykin * 1888 Cathode-ray tube [25] 1978 Carl Djerassi: 1923 Oral contraceptives [26] 1978 Leo Baekeland: 1863 Bakelite [27] 1978 Louis Pasteur: 1822 Pasteurization [28] 1978 Luis Walter Alvarez: 1911 Radar, liquid hydrogen bubble chamber [29] 1979 Charles J. Plank: 1915 ...
Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Unsourced material may be challenged and removed. Find sources: "APA Award for Distinguished Scientific Contributions to Psychology" – news · newspapers · books · scholar · JSTOR ( November 2016 ) ( Learn how and ...
Lee de Forest, while decrying the excesses of the company's senior management, had good things to say about some of the technical staff, writing: "Charles Galbraith and his corps of honest, capable, hard-working men, engineers, and operators who had been instrumental in building up the American De Forest Wireless Telegraph Company, had gone ...
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 the first portable motion picture projector, [1] which he called a Theatre in a Suitcase. [2] [3] He was the founder of the DeVry Company. [4]