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Crookes

[kroo ks] /krʊks/
noun
1.
Sir William, 1832–1919, English chemist and physicist: discovered the element thallium and the cathode ray.
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British Dictionary definitions for crookes, sir

Crookes

/krʊks/
noun
1.
Sir William. 1832–1919, English chemist and physicist: he investigated the properties of cathode rays and invented a type of radiometer and the lens named after him
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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crookes, sir in Science
Crookes
  (krks)   
British chemist and physicist who discovered thallium in 1861 and invented the radiometer (1873-76). He also developed the Crookes tube, a modified vacuum tube that was later used by W.C. Roentgen and J.J. Thomson in experiments that led to the discovery of x-rays and the electron, respectively.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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