Amazing! Mark W. tipped me off that Ikea is currently selling bowls in the form of near perfect rimless steel hemispheres, 5", 8", 11", and
14" diameter. $3 for the 5" ones.
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Here's someone using them with a Tesla coil:
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((((((((((((((( ( ( ( ( (O) ) ) ) ) )))))))))))))))) William J. Beaty SCIENCE HOBBYIST website billb at amasci com
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