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From: paulh@hplsla.HP.COM (Paul Hall)
Newsgroups: sci.electronics
Subject: Re: Kirillian photography (was :my HV experience.)
Message-ID: <5170055@hplsla.HP.COM>
Date: 23 Aug 89 16:17:56 GMT
References: <320@galadriel.bt.co.uk>
Organization: HP Lake Stevens, WA
Lines: 23

Way back in seventh grade, I did a science fair project with a kit from
Edmond Scientific.  It had a piezoelectric crystal that I think sent out
around 18,000V and would arc about 3/8".  I nailed that to a 2x4 and
attached the lead to a copper clad PC board, put some 35mm film over it,
and it worked.

I don't have any real opinions as to what I saw, but it did look an awful
lot like the standard pictures you see in books.  The discharge was
generally blue with red streaks and extended out from my finger for about
1/8" to 1/4".  You could see it with your eyes if you looked real close -
I still remember getting arcs to the tip of my nose when I looked *too*
close.   

Just about anything you put on the film would light up, fingers, coins,
etc.  There's a clasic experiment where you cut a leaf in half and the
missing half shows up in the picture - I wasn't able to see that one.
Maybe I didn't have enough voltage!

	Paul.
-----
     Paul Hall - M/S 330 - (206) 335-2252 - paulh%hplsla@hplabs.hp.com
	   Lake Stevens Instrument Division, Hewlett-Packard Co.
		8600 Soper Hill Road, Everett WA 98205-1298