Turning points: 1. Discovery of the Electron Flashcards
(4 cards)
1
Q
Who discovered the electron?
A
J.J. Thomson.
2
Q
What experiment did J.J. Thomson use to discover the electron?
A
Cathode ray tube experiment.
3
Q
What is the charge-to-mass ratio (e/m) of an electron?
A
Approximately 1.76×10^11 C/kg
4
Q
How did Thomson determine that cathode rays were negatively charged?
A
By observing their deflection in electric and magnetic fields.
