jan 1, 1904 - J.J Thomson 1094
Description:
J.J Thomson discovered the electron in 1897. He put forward the "Plum Pudding Model" which is that the negatively charged electrons float in a pudding like positive charge. However there was still not understanding of how the electrons were arranged.Added to timeline:
Date:
jan 1, 1904
Now
~ 121 years ago