| Share
 

Sir William Crookes

Crookes, Sir William, 1832–1919, English chemist and physicist. After serving at the Radcliffe Observatory, Oxford, and teaching chemistry at Chester Training College, he retired to work in his own laboratory in London. He discovered the element thallium and made special studies of radioactive substances in the course of which he invented the spinthariscope, used to make visible the flashes produced by bombarding a screen with the alpha rays of a particle of radium, and he devised the radiometer, which measures the intensity of radiant energy. He also intensively studied the rare earths and diamonds. Crookes devised spectacles to protect the eyes of glassworkers from damaging rays. One of his chief inventions is the Crookes tube, with which J. J. Thomson, W. C. Roentgen, R. A. Millikan, and others conducted important research. He founded the Chemical News in 1859 and was the author of numerous scientific papers and of Select Methods in Chemical Analysis (1871). Crookes was also interested in psychical research.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on Sir William Crookes from Infoplease:

  • Crookes: meaning and definitions - Crookes: Definition and Pronunciation
  • Crookes tube - Crookes tube Crookes tube, device invented by Sir William Crookes (c.1875) consisting essentially ...
  • thallium - thallium thallium , metallic chemical element; symbol Tl; at. no. 81; at. wt. 204.383; m.p. ...
  • Royal Society - Royal Society Royal Society, oldest scientific organization in Great Britain and one of the oldest ...
  • radiometer - radiometer radiometer , instrument for detection or measurement of electromagnetic radiation; the ...

See more Encyclopedia articles on: Chemistry: Biographies


Premium Partner Content
HighBeam Research
Documents Images and Maps Reference
(from Newspapers, Magazines, Journals, Newswires, Transcripts and Books)

Research our extensive archive of more than 80 million articles from 6,500 publications.

Additional search results provided by HighBeam Research, LLC. © Copyright 2005. All rights reserved.

24 X 7

Private Tutor

Click Here for Details
24 x 7 Tutor Availability
Unlimited Online Tutoring
1-on-1 Tutoring