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Crookes

[kroo ks]
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noun
  1. Sir William,1832–1919, English chemist and physicist: discovered the element thallium and the cathode ray.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for crookes

Historical Examples

  • There were only a Ruhmkorff coil and Crookes (vacuum) tube and the man himself.

    Little Masterpieces of Science:

    Various

  • 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.

    The Shadow World

    Hamlin Garland

  • But it must be confessed that in Crookes's pictures there is a lack of finality in the negatives.

    The Shadow World

    Hamlin Garland

  • We have our own observation, joined to the report of Crookes and Richet.


British Dictionary definitions for crookes

Crookes

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
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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

crookes in Science

Crookes

[kruks]
  1. 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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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.