J.J. Thomson (aug 18, 1897 – jan 1, 1903)
Description:
Thomson was credited with discovering the electron through the use of cathode ray tube. He also made the plum pudding model of the atom, which was very good for the time period, but was replaced later by a better model. His model illustrated that the atom was made up of tiny, negatively charged subatomic particles called “electrons”, in a positively charged base or “soup”.Added to timeline:
Date:
aug 18, 1897
jan 1, 1903
~ 5 years and 4 months