Photoelectric Effect
Planck–Einstein Relation
According to special relativity, photon energy is directly proportional to frequency:
Corollary
The momentum of a photon is then given by
.
The Compton Effect
Theorem
Thrm Compton Scattering Formula The Compton scattering formula is:
which is equivalent in terms of wavelength: where is the Compton wavelength of a particle with mass .