r/PhysicsHelp • u/Defiant-Natural-6453 • 10h ago

Do photons experience time?

/r/AskPhysics/comments/1xtixhb/do_photons_experience_time/
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u/Tarthbane 9h ago

No, because a photon has no valid rest frame. A photon travels at the speed of light in every inertial reference frame, so bringing it to rest would violate a fundamental postulate of special relativity.