Crookes

[ krooks ]

noun

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

Crookes

/ krʊks /

noun

1. CrookesSir William18321919MEnglishSCIENCE: chemistSCIENCE: physicist 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

Crookes

/ 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.

Example Sentences

Crookes knew that synthetic fertilizer wasn’t a permanent solution, but he was satisfied that when the problem reappeared in the distant future, his successors would be able to deal with it.

From MIT Technology Review

Instead, acreage had actually increased, to a degree Crookes had thought impossible.

From MIT Technology Review

It is unnecessary to reproduce these letters here; they can be found in the French edition of Crookes's Researches.

From Project Gutenberg

Mr. Crookes might, with equal propriety, examine the performances of an Indian juggler.

From Project Gutenberg

But the investigations of Crookes were conducted with such care and competence, that it is very difficult to refuse our credence.

From Project Gutenberg

She then took Mr. Crookes' hand and made the tour of the room, pressing the hand of each of us in turn.

From Project Gutenberg

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

From Project Gutenberg