Re: Top-electrode corona

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Bert Hickman by way of Terry Fritz <twftesla-at-uswest-dot-net>" <bert.hickman-at-aquila-dot-net>

Ken and all,

Very interesting! It may mean that corona/streamer flashes are more likely
to occur when the RF envelope more rapidly overvolts a large radius
topload. There certainly appear to be a number of fundamental differences
in the behavior of your system versus disruptive systems. The relatively
slow rate of rise of the secondary's RF envelope and the (related)
relatively slow rate of energy replenishment during transient spark loading
seem to be the major differences. Your experiments are providing many clues
to this puzzle, but it's going to take a while to sort it all out. Will
discuss the air inertia effect (and possible underlying causes) in another
post when I get a bit more time...

-- Bert --
-- 
Bert Hickman
Stoneridge Engineering
Email:    bert.hickman-at-aquila-dot-net
Web Site: http://www.teslamania-dot-com

Tesla list wrote:
> 
> Original poster: "Kennan C Herrick by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <kcha1-at-juno-dot-com>
> 
> Several folks have commented recently on the presence of top-electrode
> corona under the condition where a spark per se just does not break out,
> due to insufficient voltage.  Not to deny it, but I'll report that I do
> not see it in my s.s. coil.  Admittedly, I did not operate it in total
> darkness due to some light coming in via windows.  But it was quite dark
> and my eyes were adapted; I could see nothing at all looking at the
> toroid from ~4 ft. away.  I checked it using both a smooth toroid (from
> Landergren) and a corrugated one.
> 
> It may be a phenomenon having to do with the air-inertia effect that I
> postulate (see my other posting of today, etc.).
> 
> Comments...?
> 
> Ken Herrick
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