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The photon is the quantum of the electromagnetic four-potential, and therefore the massless bosonic particle associated with the electromagnetic force, commonly also called the "particle of light". Use this tag for questions about the quantum-mechanical understanding of light and/or electromagnetic interactions.

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Does a photon also come to rest after some time while travelling through a medium?

But what about photons? If they are also particles, then the same thing should happen with them. …
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