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William David Coolidge (/ ˈ k uː l ɪ dʒ /; October 23, 1873 – February 3, 1975) was an American physicist and engineer, who made major contributions to X-ray machines. He was the director of the General Electric Research Laboratory and a vice-president of the corporation.
William D. Coolidge (born October 23, 1873, Hudson, Massachusetts, U.S.—died February 3, 1975, Schenectady, New York) was an American engineer and physical chemist whose improvement of tungsten filaments was essential in the development of the modern incandescent lamp bulb and the X-ray tube.
- The Editors of Encyclopaedia Britannica
William D. Coolidge. Dr. W. D. Coolidge (1873-1975) was one of the most important innovators of the 20th century. Coolidge developed the ductile tungsten filament used in lightbulbs, fluorescent lamps, car ignitions and vacuum tubes.
Few people have been able to combine these roles as successfully as Coolidge, who lived to the respectable age of 102. He was awarded 83 patents during his lifetime. In 1973 at age 100, William David Coolidge was elected to the National Inventor’s Hall of Fame. He died on 4 February 1975.
- Emily Mace
Jan 17, 2023 · William D Coolidge (1873-1975) was an American physicist who revolutionised radiology with his groundbreaking x-ray tube, the underlying technology of which remains at the core of every machine more than a century later.
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Coolidge began investigating how he might improve tungsten lamps by making a bendable or "ductile" wire. In 1909 he came up with the answer. By putting an ingot of sintered tungsten through a series of hot swagings and drawings through successively smaller dies, bendable wire of many diameters could be made.
Mar 8, 2016 · William David Coolidge was born in Hudson, Massachusetts, on 23 October 1873. He excelled in his one-room elementary school and small high school, and in 1891 he enrolled in a nine-year-old electrical engineering program at the Massachusetts Institute of Technology in Cambridge.
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