aug 25, 1897 - Plum Pudding Model
Description:
J.J. Thompson predicted that atoms can be split up or divided by electrons that carry over negative charges. "He proposed the Plum Pudding method in which electrons were embedded in a mas of positive charge to yield an electrically charged atom"Source:
https://www.thoughtco.com/history-of-atomic-theory-4129185
Added to timeline:
Date:
aug 25, 1897
Now
~ 128 years ago