Molecules can never produce very intense waves, because you heat them up to make them more intense, and then you heat them up too hot and they’ll fly apart, and you no longer have them. Well, that’s a fundamental law of thermodynamics. However, I went through that, and thermodynamics says you can’t do it — and suddenly I realized, well, wait a minute, that’s thermodynamics, and it applies to things which have a temperature, and equilibrium temperature. All the molecules are reacting in such a way that they randomize themselves, like a normal hot thing. But you don’t have to have that. You can isolate molecules and have them in special states, not obeying that particular law of thermodynamics, so one can get around it. Isolate molecules, put all molecules in a particular excited state, and they could all radiate, and could radiate intensively, and they would produce the waves by this effect that Einstein had proposed. Namely, if the wave comes along, it stimulates the molecule, like say jiggling its electrons back and forth, until they give up their energy to the wave, and the wave then is bigger as it goes on past.