Vid of HV supply burning a CD
formatting link
Is this a good example of creepage?
Coollll how the arc jumps around. I guess it strives for the path of least resistance. If the arc eats in too far, it jumps to a better conduction path.
After the sparks stop, there is still power. Yet the rest of the CD doesn't burn.. The carbon track is more conductive than the remaining metal? Does molten polycarbonate conduct? Or perhaps the carbon track (from decomposed polycarbonate) is loading the HV supply.. Dunno..whatever...just some cheapo HV entertainment.
D from BC British Columbia Canada.