Re: Sparks - Bright in the middle, how to verify it.

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

Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Tesla729-at-cs-dot-com>

In a message dated 1/21/01 8:45:20 AM Pacific Standard Time, tesla-at-pupman-dot-com 
writes:

<<  "Mike Harrison by way of Terry Fritz <twftesla-at-uswest-dot-net>" 
<mike-at-whitewing.co.uk
 I've also frequently noticed the 'bright centre' phenomenon on several
coils. I also saw the opposite effect, a dark centre, when playing
with a piezo gas lighter recently.  >>

Mike, Jim, Chuck,
One thing that I have noticed that I'm sure a lot of others on the 
list have recognized is the "bright on one end" phenomenon with
HVDC discharges. This is noticable with Van de Graf generators
and other such HV pulsed DC sources. It is my understanding
that  the brighter end is the positive terminal and consequently,
the dimmer end is negative.

David Rieben