"Jules" wrote in message
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On Sun, 19 Jul 2009 12:13:15 +0100, Graham. wrote:
Electrolytic capacitor on long wires out of the window. Plug into mains,
metallic confetti everywhere.

Yes, I remember that sort of thing well from electronics classes, although
we aimed them at the plasterboard walls in the lab.

I also cooked up a little oscillating device running from a 9V battery and
through a step-up transformer, then invited folk to prod the contacts - I
think the voltage it delivered was somewhere around 4KV.

Never did much with explosives, although I seem to remember half-baked
experiments at turning cans of deodorant into rocket engines.

Sam Barros, the guy who runs the following website really knows how to have
fun with anything dangerous.

www.powerlabs.org