Hi guys, This is probably a basic and therefore stupid question, but hey, I'm new. When a photon hits an atom, it's energy is 'absorbed' and the electron (if we use hydrogen as an example) jumps up an orbit. It then naturally wants to loose this energy to settle back into it's ground state and subsequently emits a new photon. My question is two fold... If the energy absorbed needs to be of a certain discreet amount, then what happens to those photons that aren't of a specific energy? They can't pass through or we would get light pass through all solid objects, but if they're not absorbed and reflected by the process above, what happens to them? Alternatively, if ALL photons are absorbed (to use a simple term), then given that the newly emitted photon is of a certain quanta of energy (that of the difference between charge shells) then what happens to the difference in energy if the original photon did not match that of the required energy level of a shell jump? It seems to me (from me ignorant newbie stand point) that the first part of my question is most relevant as I would be more prone to believe that only the photons that are able to produce an electron jump (i.e. those of specific discreet energy) would be absorbed. So what then happens to the 99.9 % of photons that naturally collide with an atom and can't be absorbed and re-emitted? Forgive me if this is a stupid question. I'm sure this info is all over the internet. Just happens I started here.