## photon

https://doi.org/10.1351/goldbook.P04627
Particle of zero charge, zero rest mass, spin quantum number 1, energy $$h\ \nu$$ and @M04007@ $$\frac{h\ \nu }{c}$$($$h$$ is the @P04685@, $$\nu$$ the frequency of radiation and $$c$$ the speed of light), @C00859@ of electromagnetic force.
Sources:
Green Book, 2nd ed., p. 93 [Terms] [Book]
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2262 [Terms] [Paper]