William D. Coolidge
American physicist
Died when: 101 years 103 days (1215 months)Star Sign: Scorpio
William David Coolidge (/'ku?l?d?/;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.He was also famous for the development of "ductile tungsten", which is important for the incandescent light bulb.
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