Eli5: how come photon doesn’t have mass?
In: Physics
Think of a photon as a [burst of energy](https://www.advancedsciencenews.com/wp-content/uploads/2022/10/single-photon-source-for-quantum-encryption.jpg) that’s tiny enough to be thought of as a dot (particle) also. It doesn’t have rest mass because its energy is in its frequency.
Latest Answers