Re: Poynting Vector Vortex Experiment

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

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

> Are helical sparks observed in discharges extending sideways from the
> terminal or those extending vertically? I haven't seen any notable
> ones in my coiling so would appreciate the benefit of other's
> observations.
> 
> Thanks,
> Malcolm

	Are those really helical sparks, or are they an optical illusion or
artifact of the two-dimensional photograpy?  There's a lot of motion in
the streamers, almost any discharge shows "banjo" effects etc.which
might confuse the camera and possibly the eye.  I see similar stuff here
but never looked helical to me.

Ed