"John Doe" wrote in message
...
Quite A number of (Years or Moons ago) depending on how you keep track of
time, someone came to one of the hamfests in Gaithersburg, Maryland, in a
large box
type of truck, and mounted on top of the truck was a CAPACITOR CANNON of
sorts.

I think that I need to clarify a bit - apparently the capacitors did not
really explode, but SNAPPED IN DISCHARGE STATE causing a louder than life
noise, and could be recharged to do it continuously.



Alas, doing so today would get one arrested as a terrorist,
or for making improvised explosive devices. They went
after kids around here for filling old soda bottles with water
and dry ice so they'd pop and explode.