Pair production and annihilation:from fizzics.org

Pair production and annihilation are opposite processes converting the energy of a photon into mass and the reverse. The video tutorial explains the processes using animation and in terms of Feynman diagrams. Finally there is a sample calculation of the frequency of the photon that would be required for pair production. There are notes to support this video that can be copied from here: https://www.fizzics.org/pair-production-and-annihilation/