J. J. Thomson (dec 18, 1856 – aug 30, 1940)
Description:
Discovered electrons through his study of cathode rays, and came up with the "plum pudding" model of atomic theory, where the atoms exist as a soup of positive charge with negative electrons floating around inside.Added to timeline:
Date:
dec 18, 1856
aug 30, 1940
~ 83 years