The experiments of what two scientists were instrumental in determining the mass and charge of the electron?

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The experiments of J.J. Thompson and Robert Millikan were instrumental in determining the mass and charge of the electron. Thompson discovered the electron using a cathode ray tube and determined its charge-to-mass ratio. Millikan's oil drop experiment allowed for the determination of the charge of the electron, which, when combined with Thompson's ratio, allowed for the determination of the mass of the electron.

The Experiments of What Two Scientists Were Instrumental in Determining