Well, forget about the monorail - but at least Professor Laithwaite's invention has found a home: chasing those pesky Russkies.
An EM railgun is powered by electricity rather than gunpowder. A shell is launched at Mach 7 through the electromagnetic rails into the atmosphere for about one minute, flies out of the atmosphere for four minutes, and then descends to Earth toward its target at Mach 5 in approximately one minute. The projectile is guided using the Global Positioning System.
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