Haven't ya'll seen those underwater viewing buskets kinda like the gold
nugget hunters like to use?
----- Original Message -----
From: "Irate Mormon" <archimedes_at_bayspringstel.net>
To: <nanfa_at_aquaria.net>
Sent: Wednesday, March 17, 2004 12:08 PM
Subject: Re: NANFA-- Polarization and headlamp questions
> > > Martin pretty much out lined how polarized glasses work. The one lens
has
> > > "mini blinds" that go vertical in the lens, and the other one has
> > horizontal
> > > ones. In conjuction is how they work well with the eye. Would this
work on
> >
> > a
> > > lens of a light though? I thought the reason it worked as glasses
> > reducing
> > > glare is because each eye is working together.
>
> It is effective with a single lens if you are able to rotate it. That way
you
> can find the optimum polarization angle. Photographic polarization
filters (the
> good ones, anyway) are designed to be rotated for just that reason. So if
you
> had a set of rotating louvers you might get something similar.
>
> On the fiberoptic front, I recall seeing MANY years ago where somebody
took a
> bunch of glass fibers, twisted them, and then fused them into a cylinder.
He
> then took slices of the cylinder. The result was non-distorting glass
discs
> which would make an obect appear upside down (or rotated to whatever
desirable
> degree, according to the twist of the fiber bundle).
>
> Anyway, it seems to me that optical fibers should polarize light to
certain
> extent. The downside of this might be a samll, very conentrated spot of
light
> projecting from the headlamp. That would be useless for collecting.
Maybe I'll
> play with it this summer.
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