Re: To All

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

Original poster: "Malcolm Watts by way of Terry Fritz <teslalist-at-qwest-dot-net>" <m.j.watts-at-massey.ac.nz>

Hi All, Marc,

On 3 Feb 2003, at 7:57, Tesla list wrote:

 > Original poster: "Mark Broker by way of Terry Fritz 
<teslalist-at-qwest-dot-net>" <mbroker-at-thegeekgroup-dot-org>
 >
 > Bart,
 >
 > It is possible that the camera was being saturted in the dark by
 > the bright streamers.  In that way they would look thicker in the
 > video than they really are.
 >
 > I like the 120" strike pictures :)
 >
 > Very nice pictures, Marc!  :)

I missed seeing the url for these. Would you mind posting it please?
      It is true that video often enhances the appearance of sparks as
the aperture widens to allow for the overall reduction in light
level. The first time I saw a coil running on video I wondered what I
was doing wrong until I cottoned on to what was happening. The haze
around the sparks is very real but is often undetected by eye since
the spark channel is orders of magnitude brighter. A lot of still
cameras in particular don't adjust for this and make the effect
visible, especially with long exposure times.

Regards,
Malcolm

 > Mark Broker
 > Chief Engineer, The Geek Group
 >
 >
 > 2/2/2003 5:45:24 PM, "Tesla list" <tesla-at-pupman-dot-com> wrote:
 >
 >  >Original poster: "Barton B. Anderson by way of Terry Fritz
 > <teslalist-at-qwest-dot-net>" <classictesla-at-netzero-dot-com>
 >  >
 >  >Marc,
 >  >
 >  >No doubt these are impressive images! I'm curious if the sparks
 > looked the
 >  >same as what the video capture revealed. A lot of ionization
 > around the
 >  >main channels is clear in the frames, so I guess I'm curious if
 > it looked
 >  >this way while running or if the video camera was when you
 > noticed all the
 >  >ion formations. Definately nothing weak about those streamers.
 > The 3rd from
 >  >the bottom frame showed very smooth-curvy arcs. I think that's
 > my favorite
 >  >from the bunch. Love to see a mpg of the run sometime. Thanks a
 > bunch for
 >  >sharing these.
 >  >
 >  >Take care,
 >  >Bart
 >  >
 >
 >
 >