When an atom absorbs a photon of light and gets into an excited state, can it ever make a single jump back down to the ground state? For example, if an atom absorbed a blue photon of light then jumped straight back down to the ground state would it then emit a blue photon? How does emission transitions work for humans that continually absorb high energy light photons? For example, if a human is absorbing visible light photons then doesn't the emission photon have to equal that energy gap? So why is the re-radiated photon always infrared for humans? I would guess that the emission is staggered on its way back to the ground state but what dictates this? Any help answering any of these points is much appreciated.