Laid Foundation for Thomson
![](https://phylogame.org/wp-content/themes/phylo/img/generated-card-images/br-E933E6----1.png)
Laid Foundation for Thomson
![](https://phylogame.org/wp-content/uploads/2016/05/electron.png)
Emma, Rachel, Catherine, Mabel POINTS
This scientists’ work with cathode rays prompted Thomson to observe that the ray was negatively charged, and subsequently discover the electron.
Graphic by Eric Hamber Secondary