Re: Glass Sparks

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Chris Rutherford <chris1@xxxxxxxxxxxxxxxxxxx>

Hi,

You could also try making some pretty pictures with long exposures.  You
may even capture some strange eddy related spherical discharges as shown
below:

http://www.hackinghardware.com/sphere.jpg
http://www.hackinghardware.com/tesla/coils/SV400143.tif.jpg


Thanks

Chris


On Fri, 2005-11-25 at 20:32 -0700, Tesla list wrote:
> Original poster: "Harold Weiss" <hweiss@xxxxxxxxxx>
>
> Hi All,
>
> I've made Lichtenberg figures with 1/8" plexi sheets.  I took two
> 12x18 sheets and taped them together.  I then then drilled a small
> hole to support them with fishline above the coil.  I sandwiched the
> 12 ga spike terminal between the sheets and applied power.  The short
> streamers started spread out and grow, burning tracks in the
> plexi.  They're not as beautiful as the accelerator made ones, but
> still look kinda neat.  Use a grounding stick to change paths so they
> don't burn too deep.
>
> David E Weiss
>
> >Original poster: Chris Rutherford <chris1@xxxxxxxxxxxxxxxxxxx>
> >
> >Hi Sabastian,
> >
> >I also have experimented with glass, I used a stainless steal sphere as
> >a top load.  I stood a small piece of copper wire upright on top of the
> >sphere by twisting a loop in to the wire at the bottom to stand it on.
> >I then placed a glass jar over the top of the wire, and then stood
> >another piece of wire on top of the glass jar.  You will see the ark
> >jumping out the top of he bottom wire, in to the bottom/top of the glass
> >jar and in to the 2nd wire and then out in to the air.  Most
> >interesting.  I have considered the reasons for the strange happenings,
> >as the glass cant possible be conducting as it would break down first as
> >in salt water/glass capacitors.  I thing you must be right with your
> >capacitive model.
> >
> >Thanks
> >
> >Chris R
> >
> >
> >On Thu, 2005-11-24 at 19:09 -0700, Tesla list wrote:
> > > Original poster: "Sebastian Fischetti" <QuantumStrings@xxxxxxx>
> > >
> > > <?xml:namespace prefix="v" /><?xml:namespace prefix="o" />
> > > So I finished building my tesla coil a couple of days ago, and I've
> > > been having a blast experimenting with it and trying different
> > > toploads and stuff.  Among my many experiments I placed a piece of
> > > glass over the top of the toroid and used my grounded safety probe to
> > > generate a spark that went through the glass...well, it didn't
> > > actually go through; it created a web of sparks on either side of the
> > > glass that then produce a spark to my probe and to the toroid.  In
> > > trying to figure out how this worked, I hypothesized is that the
> > > glass acts as a dielectric to a capacitor in which in broken down air
> > > on either side of it (i.e. the web of sparks) acts as the
> > > electrodes.  I haven't researched this, but I just wanted to know
> > > what you guys thought?
> > >
> > > Also, does anyone have any other suggestions for stuff to try out
> > > with the coil?  I've placed almost anything I could get my hands on
> > > on the top of the coil, all with great effect, but more ideas would
> > > be appreciated! (and fun =)
> > >
> > > Thanks!
> > >
> >
> >
>
>
>