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Why photon mass is zero |
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Answer» Photon mass is zero because photon is a part of light , and light is a form of energy . as we know that mass and energy have a relation as follows : E=mc² as told by Albert Einstein . thus , energy has no mass but mass can be converted into energy . hence , photon has no mass Light is composed of photons, so we could ask if the photon has mass. The answer is then definitely "no": the photon is a massless particle. According to theory it has energy and momentum but no mass, and this is confirmed by experiment to within strict limits. |
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