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Sir William Crookes

(1832—1919) chemist and science journalist


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(1832–1919)

British chemist and physicist, who in 1861 used spectroscopy to discover thallium and in 1875 invented the radiometer. He also developed an improved vacuum tube (Crookes' tube) for studying gas discharges. Crookes was also involved in industrial chemistry and realised the importance of nitrogen fixation for fertilizers.

Subjects: Chemistry.


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