When light is reflected, how doesn’t its velocity ever 0?

Question

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

Answer 1

Light loses energy when it gets reflected by getting dimmer because it’s speed is always constant. A photon that loses all its energy just doesn’t exist anymore.