William D. Coolidge

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William D. Coolidge
Born	October 23, 1873 Hudson, Massachusetts, U.S.
Died	February 3, 1975(1975-02-03) (aged 101) Schenectady, New York, U.S.
Nationality	American
Alma mater	University of Leipzig Massachusetts Institute of Technology
Known for	his contributions to the incandescent electric lighting and the X-rays art
Awards	IEEE Edison Medal (1927) Hughes Medal (1927) Faraday Medal (1939) Duddell Medal and Prize (1941)
Scientific career
Fields	Electrical engineering

William David Coolidge (/ˈkuːlɪdʒ/; October 23, 1873 – February 3, 1975)^[1] 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. He was also famous for the development of "ductile tungsten", which is important for the incandescent light bulb.