In a message dated 7/26/00 11:53:20 AM Pacific Daylight Time, tesla-at-pupman-dot-com writes: > Can anyone explain why this happens, and is it indicative of near- > perfect resonance. There seems to be a lot of power in this "special" > spark. > Richard Barton. > Richard, This happens using spheres commonly, probably due to heat of spark making it rise and coalesce. Cheers, John FReau