# 17-21-107

photon

quantum of electromagnetic radiation considered as a particle of energy , where h is the Planck constant and ν the frequency of the radiation

Note 1 to entry: A photon is an elementary particle of spin 1 and having zero rest mass.

Note 2 to entry: This entry was numbered 17-918 in CIE S 017:2011.

Publication date: 2020-12