 | This article needs additional citations for verification. (April 2022) |
In particle physics, a massless particle is an elementary particle whose invariant mass is zero. At present the only confirmed massless particle is the photon.
| This article needs additional citations for verification. (April 2022) |
In particle physics, a massless particle is an elementary particle whose invariant mass is zero. At present the only confirmed massless particle is the photon.