From: Katharine Thayer (kthayer@pacifier.com)
Date: 04/02/02-08:01:55 AM Z
Richard M. Koolish wrote:
>
> >
>
> Color is very misleading, especially when your eyes can't see the part of
> the spectrum involved.
Exactly, that's why I wanted to know how one can determine what the
complement of an invisible wavelength is.
I'm sitting here with a copy of the Kodak filter
> publication B-3. If I look through the various filters for ones that block
> UV to 400 nm, I find that among them are 2A (pale yellow), 8 (yellow), 21
> (orange), 25 (red), 40 (light green), 45 (blue green). And most of the
> blue filters block anything below 360 nm. Without measuring the effect in
> the specific band of interest, it's hard to judge a filter by its color.
Very interesting, thanks.
kt
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