Joseph John Thomson
![](https://phylogame.org/wp-content/themes/phylo/img/generated-card-images/br-9BECF2----1.png)
Joseph John Thomson
1856–1940![](https://phylogame.org/wp-content/uploads/2016/05/Portrait_of_Joseph_John_Thomson.jpg)
Fontaine Chu, Krystal Xie and Ryan Yu POINTS
was an English physicist
discovered the electron in a high-vacuum cathode-ray tube
interpreted the deflection of the rays by electrically charged plates
Graphic by Eric Hamber Secondary