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> > Me I just like an excuse to make interesting images. Oh, and I got one
of
> > those plasma ball thingies at home. (Never did work out why the
streamers
> > are blue, but the terminals are pink...)
>
> Different temperatures and voltage potentials. The ball contains a
> mixture of gasses, some only ionize and glow at the central electrode.
I always wondered about that... And about how you can touch the thing
without frying yourself to a crisp ;-)
(Actually, I find that if I balance a metal object on top of the glass, I
can get little sparks to fly off it onto anything that's earthed... Burned
my finger doing that!)
Andrew.
[has too much free time]
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