Light always moves at C, but how is that the case when it is reflected? Say light is reflected at a 180° angle. It seems like there must be an infinitesimal amount of time where it is not moving while changing velocity, but physics says otherwise.
In: Physics
> physics says otherwise
Does it? My (admittedly hazy) understanding of quantum electrodynamics is that during reflection, a photon is absorbed by and re-emitted by an electron at the surface of the reflector. So it doesn’t “stop”–it ceases to exist, never having slowed down.
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