1) Chemist 2) English chemist and physicist 3) Physicist 4) Sir william crookes 5) William crookes 
[crater] Crookes is a lunar impact crater that lies on the Moon`s far side as seen from the Earth. It lies just to the southwest of the giant crater Korolev. To the southwest of Crookes is McKellar. The rim of this crater has a relatively high albedo compared to most such formations on the Moon, and it lies at the center of a ray system. Th...
Type: Term Pronunciation: kruks Definitions: 1. William, British physicist and chemist, 1832-1919; winner of the Nobel Prize in chemistry in 1907. See: Crookes glass, Crookes-Hittorf tube
[n] - English chemist and physicist
William Crookes noun English chemist and physicist; discovered thallium; invented the radiometer and studied cathode rays (1832-1919)
1832–1919, English chemist and physicist: discovered the element thallium and the cathode ray.