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Re: Hearing sparks (was Squeeky Snow).

2) Sound is usually generated by oscillating objects. How
should a sound of an electrical spark be explained? Why
do pressure oscillations appear during an electrical
discharge? What determines their frequencies?
Ludwik Kowalski

Large scale example: thunder following lightning :>)

Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
http://www.velocity.net/~trebor