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Albert Wallace Hull (19 April 1880 – 22 January 1966) is an American physicist and electrical engineer who made contributions to the development of vacuum tubes, and invented the magnetron.〔 He was a member of the National Academy of Sciences. ==Biography== He was born on 19 April 1880 in Southington, Connecticut. He majored in Greek and after taking one undergraduate course in physics, graduated from Yale University. He taught languages at The Albany Academy before returning to Yale, to take a doctorate in physics. He then undertook research on photoelectricity whilst teaching physics for five years at the Worcester Polytechnic Institute.〔 In 1914 Hull joined the General Electric Research Laboratory (GERL) in Schenectady, New York and remained there until his retirement in 1949.〔 During 1916, Hull began investigation into the use of magnetic control of thermionic valves (vacuum tubes) as an alternative to grid or electrostatic control and he had tested successfully magnetic control by applying a magnetic field parallel to the axis of the tube. Initially, Hull's work on these novel electron tubes was part of an effort at General Electric to develop amplifiers and oscillators that might be used to circumvent the vacuum- tube triode patents of Lee de Forest and Edwin Armstrong. Hull was promoted to assistant director of the GERL in 1928.〔 Hull was promoted to assistant director of the GERL in 1928. He served as president of the American Physical Society in 1942. He retired from General Electric Research Laboratory (GERL) in 1949. He did consulting work and served on an advisory committee of the Army Ballistics Research Laboratories after retirement from General Electric. He died on 22 January 1966 at the age of 85 in Schenectady, New York.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Albert W. Hull」の詳細全文を読む スポンサード リンク
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