William+Crooks+A+LIGHT

This guy invented the Crooks Radiometer. We have all seen one, just never called it a crooks Radiometer. A crooks radiometer is a light bulb with vanes in it, and the bulb is vacuum sealed. When exposed to light, the vanes spin. He also discovered Thalium and Helium. We know him more formally as the inventor of a crooks tube.

(http://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Sir_William_Crookes_1902.jpg/356px-Sir_William_Crookes_1902.jpg)