JJ Thomson's Discovery of the Electron (apr 1, 1894 – jan 1, 1904)
Description:
Thomson's theory states that;1. Atoms contained electrons, which have a negative charge (cathode ray tube experiment)
2. Electrons are embedded in positive pudding (Plum pudding model)
Added to timeline:
Date:
apr 1, 1894
jan 1, 1904
~ 9 years and 9 months