[QUOTE]\nYou're comparing a one-use device to a trillion-use device. I think\nthat's unfair.\n\nTell me when you find an atom splitter that works a trillion times.\nThen tell me what it's efficiency is, because it's not nearly 0.1%.[/QUOTE]\n\nNuclear bombs may only get used once, but nuclear reactors get used\ncontinuously for years or decades, and like I already said, their\nefficiency is around 0.1% (mass converted to energy). There are also\nvarious types of atomic batteries, such as radioisotope thermoelectric\ngenerators, which convert the radiation given off by radioactive\nsubstances to electricity. They are typically expected to have an\neffective working life of a decade or more.