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A figure of merit
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To: tesla@pupman.com 
 
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Subject: A figure of merit 
 
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From: "Kennan C Herrick" <kcha1@juno.com> (by way of Terry Fritz <twftesla@uswest.net>) 
 
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Date: Wed, 26 Apr 2000 12:43:16 -0600 
 
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Approved: twftesla@uswest.net 
 
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Delivered-To: fixup-tesla@pupman.com@fixme 
 
A while back Gary Johnson asked for reports on solid-state spark length;
and I responded with a proposal for a figure of merit or "quality"
measure for Tesla coils: spark length to a grounded point per primary
volt--for all builders, solid state and "spark".  I proposed millimeters
per volt just to make the number less depressing (25.4 mm are in each and
every inch!).
But there's been a silence.  So I repeat it.  How about it, everyone? 
Any interest?
I put up 3.8 mm/V:  ~24" or 610 mm with 160 V on my solid-state primary.
Ken Herrick
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