jan 1, 1897 - Model: His model was called the plum pudding model of the atom. He thought of this because he discovered the electron by experimenting with a cathode-ray tube. Experiment: He experimented with cathode-ray tubes and he found that all atoms contain tiny negatively charged subatomic particles or electrons. He was the person who discovered that an atom has a smaller part called electrons.
Added to timeline:
Date:
jan 1, 1897
Now
~ 129 years ago