Via Fox News:
A theoretical dream for decades, the railgun is unlike any other weapon used in warfare. And it's quite real too, as the U.S. Navy has proven in a record-setting test today in Dahlgren, VA.I particularly like the part about akin to a car hitting a wall at 100 mph and then multiply that by 33.
Rather than relying on a explosion to fire a projectile, the technology uses an electomagnetic current to accelerate a non-explosive bullet at several times the speed of sound. The conductive projectile zips along a set of electrically charged parallel rails and out of the barrel at speeds up to Mach 7.
The result: a weapon that can hit a target 100 miles or more away within minutes.
"It's an over-used term, but it really changes several games," Rear Admiral Nevin P. Carr, Jr., the chief of Naval Research, told FoxNews.com prior to the test.