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Re: How should we measure coil efficiency, was neon vs. p




From: 	Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: 	Sunday, July 27, 1997 3:35 PM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: How should we measure coil efficiency, was neon vs.   p

HI all,
        Some results obtained from the mini-coil experiments suggest 
that resonant frequency doesn't actually have a great deal to do with 
spark appearance....

> From:   FutureT-at-aol-dot-com[SMTP:FutureT-at-aol-dot-com]
> Sent:   Saturday, July 26, 1997 4:29 AM
> To:     tesla-at-pupman-dot-com
> Subject:    Re: How should we measure coil efficiency, was neon vs.   potenti
> 
> >   Where did you find that higher frequency gives shorter sparks?  I believe
> > it is the other way around.  The higher the frequency the longer the spark.
>  
> >    Energy = hf    h = Planck's constant   f = freq.
>  
> >    From the above equation the energy increases as the frequency increases,
> > other factors being equal. This would mean when the frequency increases the
> > spark length increases.
> 
> John C,
> 
> The above equation completely ignores radiation losses, and  plasma ion
> growth effects.  As you said, "other factors being equal", but in a TC other
> factors are not equal.  High frequency sparks tend to take on a short
> plasma flame-like appearance.
> 
> John Freau 

I noticed no substantial difference between the streamers I obtain an 
higher powered systems and the coils in questions. Flame-like sparks 
were obtained but only at high break rates (e.g. 400 BPS). I wonder 
about the applicability of equations describing things at atomic level
to large sparks.

Malcolm