If a photon cannot be accelerated or decelerated, how is reflecting them possible at all?
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If a photon cannot be accelerated or decelerated, how is reflecting them possible at all?
A photon is a quantum mechanical particle/entity and obeys quantum electrodynamics interaction rules. The reflection is one of the possible interactions of a photon with the electric fields of atoms and molecules, the elastic scattering which only changes the direction of the photon, not the energy, i.e. frequency , as E=h*nu.
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