Re: Beading caught on film.

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Malcolm Watts" <m.j.watts@xxxxxxxxxxxx>

On 4 May 2005, at 21:31, Tesla list wrote:

> Original poster: "Gerald  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
>
> Hi Mike,
>
> The coil was a classical spark gap (either static SG or SRSG) TC
> powered from NST's.  The phenominum occured at 500W and 1KW power
> levels (and using a smaller coil as well).  I can draw a 5 foot arc
> and there would be a 3 or 4 inch segment of the arc close to but not
> touching the grounded strike point that would be about twice as bright
> as the rest of the arc.  The position of the segment would not change
> from one streamer to another.
>
> Gerry R

I think you'll find that's about where the streamer emanating from
the coil meets with a leader coming from the target.

Malcolm

>
> >Original poster: "Mike" <induction@xxxxxxxxxxx>
> >
> >Hi Gerry,
> >              Interesting arc related question. I've read that with
> >              DC
> > welding in certain systems, the cathode runs something like 1/3 hot
> > compared to the anode, at 2/3 hot. Current direction flow issue I
> > guess.
> >I know if I draw an arc in the discharge tube, even 6 feet long, I
> >can get the Stainless base to show Blue staining when I access it
> >again but never see this in the top electrode. The top is usually
> >negative, the base is usually positive and grounded. Do you notice
> >this in DC only? Mike
> >
> >
> >>Original poster: "Gerald  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
> >>
> >>Hi Terry,
> >>
> >>I think it is a picture just before you burned your house down :-))
> >>Seriously, when I draw a power arc to a grounded object,  there
> >>always seems to be a segment of the arc near the grounded object
> >>that is twice as bright as the rest of the arc.  Any ideas on what
> >>that might be and could this be the same phenominum???    What are
> >>beads (in the airplane picture)???  I havent heard this term before.
> >>
> >>Gerry
>
>
>
>
>