William Crookes (1832 - 1919)

Current Atomic Model

1. Invented the Crookes tube in early 1870s.
2. He noticed that as you removed gas from a tube, a glow would appear if you place a high voltage across it.
3. He noticed that a shadow would form if something was placed in the tube, so he believed some new kind of light was being produced.
4. He called these rays - cathode rays.