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by campbel
764 days ago
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The only reason that nuclear energy/weapons are possible at all is because there exists isotopes that release more neutrons than they absorb during fission (the chain reaction). Nuclear fission itself wasn't fully understood until 1938. I think this is the hard part of analyzing systems. If there exists mechanisms outside of your current understanding, there is no way to predict what is and isn't possible "It always seems impossible until it's done." - Nelson Mandela |
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See Lord Kelvin on heavier-than-air flight (he was fixated IIRC on the theoretical maximum power-to-weight ratio of a steam engine)