Re: To All

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

Original poster: "Barton B. Anderson by way of Terry Fritz <teslalist-at-qwest-dot-net>" <classictesla-at-netzero-dot-com>

Hi Terry,

Maybe. I think Paul had the right question of how many frames in the video 
did this object appear and during that time did it move. If it's a spot on 
the secondary, then maybe the background found was due to the light from 
the ball reflecting on the secondary windings. Depending on the location, 
that could also explain the shape of that outer area.

Take care,
Bart

Tesla list wrote:

>Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>
>
>Hi,
>
>Are we sure that is just not a "hot pixel" in the camera's CCD sensor 
>8-)    Note this rather famous top terminal picture where "hot pixels" in 
>the camera's sensor are used to give a star field effect.
>
>http://hot-streamer-dot-com/temp/GarryFreemyer.jpg
>
>The original is at:
>
>http://hot-streamer-dot-com/TeslaCoils/Misc/GarryFreemyer.bmp
>
>If anyone wants to compare "fingerprints" of such CCD defects with the 
>spot in question.  JPG compression and all that help to add flavor to such 
>defects.  Those effects are all predictable if one knows of such complex 
>math stuff.
>
>A search on "hot pixels" revels that there is now almost a branch of 
>science devoted to these little pests of the low light digital 
>photographer ;-))
>
>Ross O. and I traded many E-mails on these with our camera's.  I think our 
>cameras (3.2Meg Pixel) gain a new hot pixel every few months...  I 
>sometimes have to go edit them out of low light pictures...
>Astronomer's have to be super careful since a suddenly developed hot pixel 
>looks just like that new planet they have been looking for ;-))
>
>Cheers,
>
>         Terry
>
>
>
>At 10:59 AM 2/4/2003 +0000, you wrote:
>
>> > http://www.classictesla-dot-com/temp/Marc.html
>>
>>The holy grail of ball lightning is the 'reproducible observation'.
>>I'd say never mind worrying about what it is right now, concentrate
>>on reproducing it.
>>
>>Do we know where this ball of light was situated wrt the TC?
>>
>>Would be nice to have a mirror set up in the field of view, so that
>>the ball appears in two places in the image. Then it can be located
>>and its size estimated.
>>
>>Lots of compression artifacts being amplified by the contrast
>>enhancement.  How many video frames did it last for?  Maybe an average
>>image can be assembled?  Did it move?
>>
>>The surrounding light could be scattering off the camera lens and
>>innards, but the central bright area seems fairly round and well
>>defined:
>>
>>  http://www.abelian.demon.co.uk/tmp/209630a0-1.jpg
>>
>>It looks like a ball, but it could still be a point source.  I plotted
>>the pixel values for a closer look, but no conclusion.  Needs more
>>observations.
>>--
>>Paul Nicholson
>>--
>
>
>
>