I was wondering how flourescant lights work, and how they eventually wear out. I'm not sure, but it seems that you just have halogen gas inside the glass tube, you pump some electricity into the gas, it excites the atoms and they give off light as their electrons go from higher energy levels back down to lower ones. If I'm wrong on that, then please correct me, but it seems simple enough... The real question I have, is how do they wear out? If all it is is atoms getting excited and giving off light, how does the light bulb eventually "die out"?