J.J. Thomson (jan 1, 1856 – jan 1, 1940)
Description:
J.J. Thomson discovered the existence of the electron and proved that atoms can be separated. He also invented the Plum Pudding model of the atom which depicts a positively charged ball filled with negatively charge electrons scattered throughout.Added to timeline:
Date:
jan 1, 1856
jan 1, 1940
~ 84 years