Re: Beading caught on film.

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

Hi Stork,

So you think it is part of the arc that is streaming directly into the 
camera lens direction....

Might be the case in my picture.  But Mike's picture seems like he had such 
a large number of them...

Hard to say...  But your explanation probably accounts for most of these 
"fireballs in pictures" for sure!!

Being able to consistently reproduce them is the key...

BTW - Hope your house fire thing is going well.

Cheers,

        Terry




At 08:19 PM 5/3/2005, you wrote:

> > Don't know what it is...
> > Cheers,
> >         Terry
>
> Terry,
>
> There is a very simple explanation.  We see this effect in medical imaging 
> all the time.  An example is a simple x-ray where a three dimensional 
> object is reduced to two dimensions on the x-ray film.  When an image is 
> taken end on or longitudinally of a cylindrical object, such as a blood 
> vessel or air in a bronchus, the density of the object is greatly enhanced 
> or reduced depending on density.  And, since these images are nonlinear 
> this image is greatly accentuated.  If x-rayed again at 90 degrees 
> orientation the object completely vanishes on the x-ray.
>
> We all know these TC arcs spiral.  The beading is nothing more than a two 
> dimensional depiction of a three dimensional process. The bead 
> photographed is simply looking longitudinally down a short segment of an 
> arc.  If two cameras are synchronized and at 90 degrees orientation beads 
> will photograph on either, but not synchronously together.
>
> stork