Comment Re:Only works with conductive charges (Score 1) 418
conductivity of the warhead is irrelivant. this is a capacitor. it's capacity (ability to store a charge -- especially capable of thousands of amps) is related to both its surface area (of the metal plates) and the thickness (and quality) of the insulation (dielectric) between the plates. more surface area, the thicker dielectric, and the better the dielectric can resist conducting all increase peak capacity.
therefore, if some projectile impacts the capacitor while fully charged, the dielectric could be thinned (under compression from the impact), or punctured/fractured so that air, which conducts WAY better than the dielectric, will then allow a short-circuit thru that point.
the result is an electrical arc that destroys the dielectric and anything else near it in a flash of light and intense heat...
not to mention the flowing currents. i imagine the capacitors are at moderately high voltages (5-10kV or so?) to create that much current on the spot... it takes time for capacitors to charge and discharge. certainly, the copper warheads contribute somehow to their own undoing..