Right, I understand each individual phenomenon, but, for example, how does an entire atom moving faster result in the electron(s) of that atom emitting photons? And, conversely, how does a photon being absorbed by an electron become the entire atom vibrating with a little more energy? Shouldn't the electron receiving the photon just jump up a quantum level, then back down again when it in turn emits a photon, rather than any of that activity somehow making the entire atom vibrate more? This is what I'm missing...