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Re: Beading caught on film.
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- Subject: Re: Beading caught on film.
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- Date: Tue, 03 May 2005 21:58:15 -0600
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Original poster: "Jim Lux" <jimlux@xxxxxxxxxxxxx>
If you've ever sat in a faraday cage with a coil striking it you'll see the
same "beading" phenomenon. Quite unique and noticeable.
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
Sent: Tuesday, May 03, 2005 7:33 PM
Subject: Re: Beading caught on film.
> Original poster: stork <stork@xxxxxxxxxxxxxxxxxxx>
> >Don't know what it is...
> > 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
> 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.