Re: Polarizers

[P3D Gregory J. Wageman <gjw@xxxxxxxxxx>]

>Wait a hold a minute!  I don't remember my stuff about polarizers, but the
>first time the light goes through the polarizer it loses the half of the
>light that isn't parallel to the orientation and 10% of the stuff that is.
> The next polarizer (polaroid glasses) loses the amount that got partially
>diffused because of the screen and again 10%? of the remaining light that is
>parallel.  If the screen completely diffused the light then what you said
>would be true.  But since it reflects the light (reversing the orientation of
>the light), there is definately more than 16% that makes it back to the eye.

It depends on whether the 40% transmission figure is "40% of all light" or
"40% of light of the proper polarization".  I've been assuming the latter,
but I can see where that might be wrong.

        -Greg


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End of PHOTO-3D Digest 1612
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