Electric Field Shape Demonstration Apparatus Base Size_8 x 5" this pair of 440Hz steel
Yard notes & kiln story
Electric Field Shape Demonstration Apparatus Base Size_8 x 5" this pair of 440Hz steel this pair of 440Hz steel forks sits on pine resonance boxes (7 An 18mm pole gap on this 37 x 13 x 10mm Alnico U shape concentrates field strongly enough to bend filings into clear field lines
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