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Comment Re:IANA Physicist, So... (Score 1) 630

Instead, you have to store enough energy to fire the thing. I assure you - punching a hole in a capacitor bank charged up to fire one of these will not merely result in an 'arc flash' hazard...

But, at least you can discharge these and then later charge them. It's kind of hard to not have propellant and then suddenly have some when you want it - it's there all the time.

Comment Re:IANA Physicist, So... (Score 2) 630

Regarding the background: that is an incredibly high-speed camera, being rotated at a very high speed (think "on a spring"). AFAIK the slug needs to be ferromagnetic. Is uranium? I don't actually know. The sabot is just there to help not destroy the rails and make sure the projectile stays on them (eg doesn't flop out) - it's not meant to help carry the projectile.

The affects on the target when you have something moving that fast are rather dramatic - even plain old steel.

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