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

See Examples For:

Crookes

The following summer, Crookes played Glastonbury's Pyramid Stage for the first time, bursting into tears at the scale of the occasion.

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

Also previewing new material was London soul-pop singer Joy Crookes.

From BBC ● Jun. 29, 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 Crookes electric radiometer is also spun around when connected to one of the terminals of the coil, but only at very high exhaustion or at ordinary pressures.

From The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting by Thomas Commerford Martin