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

The role took Crookes, who plays an older sister to the lead character, all the way to the Venice Film Festival, where the movie won the coveted audience award.

From BBC • Sep. 18, 2025

When Chris Brain first began attending services at St Thomas Crookes in Sheffield in the 1980s, he was seen as charismatic, engaging and passionate.

From BBC • Aug. 21, 2025

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

According to chairman Mike Crookes, the facility would "blight this area" and the economic impact on tourism could be "profound" and "catastrophic".

From BBC • Oct. 21, 2024

Crookes has represented this experiment by a sketch in his memoir upon this subject.

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