i can't verify your railgun claim, but theres no reason we couldnt have a powerful one back then. the lorentz force, as it applies to a rail gun, is very interesting...because apparently, it doesn't follow newton's third law of motion, that every action has an equal and opposite reaction...because the recoil in a rail gun is very small, even though it's accelerating an object to very high speeds. friction accounts for some of the recoil force, and there is some force that pushes outward on the rails, but it's not equal to the acceleration force...
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