Just curious, is it possible for light to strike an atom in such a way as to accelerate it? I know that the energy can be absorbed in the atom, which would cause it's energy levels to rise, but could the acceleration be controlled and directed?
This is a two part question. First question: what exactly is a photon? I know that it's essentially a bundle of energy, but does it have mass? Can it be related by E=mC^2?
Second question: If I were to find a perfectly smooth spherical mirror (also assuming the distance between atoms is...