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Coolidge tube

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noun Physics.
a cathode ray tube, used for x-ray production, in which a beam of thermoelectrons is produced by heating a wire cathode.
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Origin of Coolidge tube

1910–15, Americanism; named after William D. Coolidge (1873–1975), U.S. physicist and chemist who devised it
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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