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We all have seen that "laser" looking device that freezes people or things when shot at them. I know that lasers are "hot" only. But is there anyway for a laser to induce an endothermic reaction in the targeted material? I know that lasers tend to heat things up, but can that be reversed? I...

This idea would only work reliably in a vacuum if it would even work at all. I seen how a ruby laser works and I'm sure this can be adapted to gas lasers as well as semi-conductor lasers with a bit of tweaking. I read an article on how an electron stream wont "ride" inside an laser beam(for...