Practicing Success
Discovery of Cathode Rays is attributed to ____? |
R.A. Millikan Roentgen J.J. Thompson William Crookes |
William Crookes |
In 1878, Sir William Crookes, a British scientist, displayed the first cathode rays using a modification of the Geissler apparatus. His major contribution to construction of the tube was to develop ways to evacuate almost all the air from the tube. |