quote:
Originally posted by TallTroll:
But...on totally the other end of the scale, hands up those who know which parameter of a photon is inversely related to its energy?
Actually, I suspect you wouldn't be able to get a photon pumped up to a high enough energy to collapse it into a black hole. High-energy gamma rays have a tendancy to decay into electron-positron pairs (the reverse of the antimatter annihilation reaction), with the chances of pair formation going up with the photon's energy. I've never heard of the possibility of black hole formation, so I suspect that photons would decay before they reach that point.