For those of you that aren't familiar with the concept, they're basically weapons that use electromagnetic currents to fire a metal slug out of a barrel consisting of two "rails". They don't use any kind of gunpowder, and don't require any type of explosions to operate. Yes, they actually DO exist, and they're a lot of fun for those of us like me that are pretty hardcore into video gaming.
Anyway, check out these links:
http://www.powerlabs.org/railgun.htm
http://www.railgun.org/
http://www.eng.auburn.edu/department/ece/railgun/
I just think it's a pretty interesting topic, I don't know if anyone else really cares. But if you do, there it is!