[TCML] Latest TC results, and one strange one....
mustang_5l87 at hotmail.com
Tue Nov 24 08:44:20 MST 2009
I think this is the same as when you take a video with the spark gap in frame. I notice that bright pulsing streaks follow the spark gap vertically up the screen.
On 2009-11-24 08:31:06 -0700 Bert Hickman <bert.hickman at aquila.net> wrote:
> Hello Peter,
> It looks like you may be seeing artifacts from the camera's optical
> system or (more likely) the camera sensor and electronics. These "ghost"
> artifacts often show up when electronically photographing bright sparks
> or lightning. A careful examination of the mystery sparks in your video
> shows that they are displaced, much fainter, duplicates of much brighter
> spark segments below. They are mostly showing up only during the
> higher-current (much brighter) ground strikes. Similar, vertically
> displaced "ghost images" of your main spark gap can be seen as fainter
> "speckles" located in various positions above the main gap in other
> video clips of your coil in operation.
> For example, in your GIF referenced below, the overall shape of the
> spark channel, including the split section of the main channel, can
> easily be matched up between the "Weird Spark" and the bright ground
> strike below. Although the match-up is not as evident (since the lower
> portion of the ground strike is off-frame) similar correspondence with
> segments of the ground strike could be done for weird segments 2, 3, and
> Ghost images are most often seen during video captures of lightning, but
> sometimes occur with TC's, especially during high-current ground
> strikes. Some similar examples with lightning and ways to recognize this
> phenomenon can be found here:
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