Experiment Proving Electrons Have Same Mass & Charge

[yoseeta]

Which experiment describes that electrons have same mass and same charge?

 

[Fewmet]

Which experiment describes that electrons have same mass and same charge?

Welcome to Physics Forums.

The Thomson experiment measured the mass to charge ratio of the electron. The Millikan oil drop experiment measured the charge, and therefor the mass. Thinking through what I recall of the analyses of both experiments, it might be possible that they would miss electrons coming in masses and charges of m_e and e, or 2m_e and 2e, etc.

Beyond that, I cannot name other experiments. One that measured the mass independently of the charge would clinch it. If there were none done by the time quantum mechanics was being worked out, any variation in mass would surely have come out in all the experimentation and calculation involving rest and relativistic energies of electrons.

 

[yoseeta]

Great! thanks :)