Re: ATM Re:Moon and Polarizing filters (longish)

[Spencer Roedder <roedder@roedder.com>]

At 01:30 PM 98/07/11 +0700, Raymond W. wrote:
>
>Many years ago I had a set of special polarizing filters (removed from some
>military surplus junk) that, when one was rotated relative to the other,
>yielded little transmissive loss all the way to a deep red color.
>
>I have well understood common polarizing filters for many years, but this
>one is a puzzle. Who can explain what this was all about?

I don't quite understand you.  Are you saying they were relatively clear
when parallel, but showed a deep red color when crossed?  If so, that would
simply mean that they do a better job of polarizing blue light.

--Spencer Roedder   roedder@roedder.com