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| | One Hand Clapping |
 | | Rail guns, so named because they don't require an enclosed tube to fire, but use, well, a rail instead, were envisioned decades ago, and were even postulated for awhile as a means of routine space launch. |
 | | Project Thor was named after the Norse god, whose legendary hammer could smash anything. |
 | | As I recall, each rod would be about 20 pounds, but when de-orbited would strike a target with the equivalent of 40 kilograms of high explosive (all this from memory, mind you). |
| www.donaldsensing.com /2004/07/rail-guns-for-navy.html (781 words) |
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