J.J Thomson

Date of Discovery

Discovery

Timeline Influence

Picture

Key Terminology

Electrons

Plum

Pudding

Atoms

Began the overall scientific look at the atom and its components

Plum Pudding Model
Thomson said he discovered the electron. This meant that atoms have some sort of structure

He found that the negatively charged electrons were scattered throughout a cloud of positive charge
He compared this to the plums in plum pudding.



1897