Gamma rays are basically high energy photons. Which means it's light. As we know photon has zero rest mass. However, theoretically it's possible to find the effective mass of photon which is given as m=hf/c². read more
A gamma ray is a form of electromagnetic energy. As such, it is said to have a rest mass of zero. A gamma ray, being electromagnetic energy, has some "particle-like" properties, as does other photonic radiation. But it moves at the speed of light in a vacuum and is generally said to be massless. read more
Gamma rays are basically high energy photons. Which means it's light. As we know photon has zero rest mass. However, theoretically it's possible to find the effective mass of photon which is given as m=hf/c². read more
In the process of pair production, a gamma-ray photon with an energy exceeding twice the rest mass energy of the electron (greater than 1.02 MeV), when passing close to a nucleus, is directly converted into an electron-positron pair (see photograph). read more