What is a coil gun?

http://www.break.com/usercontent/2008/10/Powerful-Coilgun-594985.html


Just watched this video, it seems pretty interesting. Does anyone know how to build one of these? or does any one have one?

A coil gun is a electromagnetic device that is used to accelerate metal objects to
high velocity's. They usually use capacitors to store the energy needed to cause
such a large electromagnetic pulse.

Its very similar to the rail gun and is a very simple device. I've used a a camera
capacitor and a coil of wire to launch paper clips across the room. ;D It was anything but deadly though.

--hydro15

http://www.jeffhove.com/robots/coilgunhowto.html
http://www.instructables.com/id/Disposable-camera-coilgun/?ALLSTEPS
http://www.angelfire.com/80s/sixmhz/cgkit.html
some thing cool
http://www.instructables.com/id/How-to-build-a-simple-Plasma-Rifle-aka-Electrother/?ALLSTEPS