Crookes  (krŏŏks)  British chemist and physicist who discovered thallium (1861), invented the radiometer (1875), and studied cathode rays. |
Crookes (kr ks) Pronunciation Key
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. |
Crookes, Sir William
British chemist and physicist noted for his discovery of the element thallium and for his cathode-ray studies, fundamental in the development of atomic physics.
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