This phenomenon is used by an h-over-e apparatus, such as the PASCO
This phenomenon is used by an h-over-e apparatus, such as the PASCO AP-9368, which can be used to experimentally determine Planck's constant. The probability of this effect is often given as atomic number raised to the n over h nu to the third, where n is between three and five. By exactly offsetting the maximum kinetic energy of this process, one can calculate the stopping potential. The kinetic energy of particles emitted by this process is equal to Planck's constant times frequency minus the difference in (*) energy level between the vacuum and their Fermi energy, which is the work function. A 1905 Annus Mirabilis paper explaining this effect won Einstein his Physics Nobel. For 10 points, name this effect in which incident light frees electrons from a metal.
This phenomenon is used by an h-over-e apparatus, such as the PASCO
photoelectric effect [or photoemission]