| http://www.w3.org/ns/prov#value | - The biggest thing is it is real--not just something on the drawing board, he said.The railgun works by sending electric current along parallel rails, creating an electromagnetic force so powerful it can fire a projectile at tremendous speed.Because the gun uses electricity and not gunpowder to fire projectiles, it is safer, eliminating the possibility of explosions on ships and vehicles equipped w
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