It can only occur when the work function is less than the product of Planck's constant and the frequency of the incident light.
The Duane-Hunt law describes an inverse form of this phenomenon produced by the bremsstrahlung. The stopping potential is typically used in experimental measurements of this phenomenon. Millikan was able to measure Planck's constant to within 0.5% precision in a series of experiments on this effect. The change in energy of a certain particle due to it is independent of intensity of the incident radiation. It can only occur when the work function is less than the product of Planck's constant and the frequency of the incident light. For 10 points, name this effect in which photons eject electrons from a metal plate, whose explanation won Einstein the 1905 Nobel Prize.
The Duane-Hunt law describes an inverse form of this phenomenon produced by the bremsstrahlung.
photoelectric effect [accept Hertz effect before mention]