- Sir William,1832–1919, English chemist and physicist: discovered the element thallium and the cathode ray.
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Examples from the Web for crookes
There were only a Ruhmkorff coil and Crookes (vacuum) tube and the man himself.
This is all which appears to be accomplished by the process which Mr. Crookes recommends.
"I have avoided doing so, for I respect Crookes as a chemist," he added.
But it must be confessed that in Crookes's pictures there is a lack of finality in the negatives.
We have our own observation, joined to the report of Crookes and Richet.The Tyranny of the Dark
- 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 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- 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.
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