Classical photoelectric apparatus with shielded photodiode and constant-current source.
Photoelectric effect based determination of Planck’s Constant, h, a physical constant which relates the energy carried by a photon to its frequency.
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Determine elementary charge by observing charged oil droplets in an electric field.
Measure the charge-to-mass ratio of the electron with a precision Helmholtz coil setup.
Determine Planck’s constant using six narrow-band visible LEDs and a precision voltmeter.
