RE: Why the primary is a flat spiral?

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

Original poster: "David Thomson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dave-at-volantis-dot-org>

Hi Shaun,

In my explanation of the flat spiral secondary, I attribute it to the
geometry of the flat spiral coil allowing the longitudinal waves to develop
inertia in the coil.  A coil has two major axes of energy propagation.  The
potential axis is obvious, but the longitudinal axis is greatly overlooked
among Tesla coilers.  Both depth _and_ width are important when trying to
generate standing waves, whether they be of water or of electricity.

Dave

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Tuesday, April 09, 2002 2:24 AM
To: tesla-at-pupman-dot-com
Subject: Why the primary is a flat spiral?


Original poster: "Shaun Epp by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<scepp-at-mts-dot-net>

I did a demonstration to a group of Ham Radio people I know this evening and
it went really well.  I demostrated the spark show, burning / stripping a
CD, tube light lite from a distance and on top of the coil.  They where all
impressed, I even recieved  a round of applause   : ^ ) .  One woman asked
me why the primary coil was flat and I was somewhat stumped.  I just
explained that its used to couple the energy into the the secondary.  Now
I'm wondering what to tell the next person, something to do with coupling?

What other stage tricks do others do?