Daily Archives: June 16, 2014


Crookes Radiometer
June 17 is William Crookes birthday. Crookes was an English chemist best known for the discovery of the element thallium. Crookes was sent a ten pound sample of sludge from his former teacher August von Hofmann. Crookes had moved his research from organic chemistry to the study of compounds of selenium. The […]

Today In Science History – June 17