# Re: Racing Spark Prediction

Original poster: "Bob (R.A.) Jones" <a1accounting@xxxxxxxxxxxxx>

----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Wednesday, May 10, 2006 7:05 AM
Subject: Re: Racing Spark Prediction

> Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
>
> Hi Paul,
>
> In thinking about the primary induction and secondary self induction
> that you mention,  Im wondering if there is a third component to the
> voltage profile.
>
>
> Say the primary fires and the primary induction creates a voltage
> profile on the secondary.  Any voltage gradient from say one turn to
> the next will start a traveling wave following the wire path.  The
> current from this traveling wave will result in self induction of the
> secondary.
>
> 1. Primary induction happens almost instantaneously across the entire
> coil. Magnetic field travels at speed of light from primary to a
> particular turn on the coil and in general the arrival of the field
> will be a little different from one turn to another.
>
> 2. The traveling wave follows the wire path (one component to the
> total poynting vector) and time taken to reach the top of the coil is
> the time taken to propagate the wire path.  For a 1000 turn coil
> probably 1000 little traveling waves each starting from a different
> turn of the coil if you get my meaning here.  Maybe take the primary
> induction profile as initial conditions on the wire path and start
>
> 3.The current flowing by the traveling waves creates a magnetic field
> that propagates at the speed of light to all other turns in a direct
> path instead of following the wire path.
>
> The total voltage at any given instant would then seem to be the sum
> of all three effects.  Does this paradigm seem reasonable???
>

Yes its true that the magnetic wave propagates at the speed of light.
But what happens at the fundamental frequency of the coil and several
octaves above it,  is that various waves from each element of the coil
interfere with each other such that the direct wave is cancelled and only a
slow wave propagates and eventually appears at the far end.

It is similar to light traveling thru a glass block. Though the glass block
is mostly empty space and therefore you might expect some light to pop out
the far side of the block in just the time it takes light to travel that
distance in a vacuum. However this does not happen because the effect of all
the waves scattered inside the glass by the atoms interfere with each other
and the overall effect is a wave that travels more slowly (usually for
visible light and common glass).

I think this has been expalained in detail before. Possibly you can find a
more detailed explaination in the archives.

>
>
Robert (R. A.) Jones
A1 Accounting, Inc., Fl
407 649 6400