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

With their support, and as her mental health improved, Crookes began to rediscover herself.

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

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

In the experiments of Crookes we saw that the weight of a board increased almost 1¼ pounds.

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