Crookes

American  

[krooks] / krʊks /

noun

1. Sir William, 1832–1919, English chemist and physicist: discovered the element thallium and the cathode ray.

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Crookes British  

/ krʊks /

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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Crookes Scientific  

/ krks /

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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Example Sentences

Also added to Boardmasters' line-up are Joy Crookes, Rose Gray and Jacob Alon, who won the Brits' Critics' Choice earlier this month.

From BBC • Jan. 28, 2026

Johnson sang with Jungle when they headlined the West Holts Stage last year, while his bandmate Barney Lister is an award-nominated writer/producer for acts like Joy Crookes, Celeste, Olivia Dean and Obongjayar.

From BBC • Jun. 23, 2025

"Joy Crookes is an artist who I've never seen live before who I love to hang out with on the radio," he says.

From BBC • May 22, 2025

A survey of 1,100 people along the coastline from Mablethorpe to Skegness, carried out by GOTEC, found "83% of them would not visit this area if that facility was built", Mr Crookes added.

From BBC • Oct. 21, 2024

I should think that there is good reason to suppose that the experiments of Crookes are authentic.

From Mysterious Psychic Forces An Account of the Author's Investigations in Psychical Research, Together with Those of Other European Savants by Flammarion, Camille