jan 7, 1904 - Plum Pudding Atomic Model (1904)
Description:
In Thomson's model, the atom is composed of electrons surrounded by a soup of positive charge to balance the electrons' negative charges, like negatively charged “plums” surrounded by positively charged “pudding”. The 1904 Thomson model was disproved by Hans Geiger's and Ernest Marsden's 1909 gold foil experiment.Added to timeline:
Date:
jan 7, 1904
Now
~ 121 years ago