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When light comes from a source, there are numerous photons associated with the energy packets. Now, what is the velocity of a single photon with respect to another photon coming form the same source i.e. the relative velocity between two photons?

Qmechanic
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Rajsekhar Bhowmick
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1 Answers1

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Technically, no reference frame really makes sense at exactly the speed of light, because the definitions of time and velocity and many other quantities just break down, but for the sake of trying to answer your question, just know the relative velocity has to be between 0 and the speed of light, and the same goes for between any other two frames.

Andrew Yuan
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