Re: [Phys-L] -EXT-Phys-l Digest, Vol 218, Issue 1

["Woolf, Lawrence" <Lawrence.Woolf@ga-asi.com>]

The L* a* b* color space/sphere is commonly used in industry and is an easily visualizable 3-D model for color:
https://www.xrite.com/blog/tolerancing-part-3

There are many color other models, including the standard Yxy model John discussed.

What is quite interesting about these color systems is that they allow color differences to be quantified as distances in the 3-dimensional color space, typically via delta E:
https://en.wikipedia.org/wiki/Color_difference

For those interested in converting between color spaces:
https://www.easyrgb.com/en/

For those interested in a poster on color mixing:
https://www.sci-ed-ga.org/science-education-posters

Larry Woolf

-----Original Message-----
From: Phys-l <phys-l-bounces@mail.phys-l.org> On Behalf Of phys-l-request@mail.phys-l.org
Sent: Wednesday, February 1, 2023 9:00 AM
To: phys-l@mail.phys-l.org
Subject: -EXT-Phys-l Digest, Vol 218, Issue 1

Today's Topics:

   1. Re: interactive 3D CIE chromaticity diagram / color vision /
      xy versus xyY space (Karim Diff)


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Message: 1
Date: Tue, 31 Jan 2023 20:05:03 -0500
From: Karim Diff <karim.diff@gmail.com>
To: Phys-L@phys-l.org
Subject: Re: [Phys-L] interactive 3D CIE chromaticity diagram / color
        vision / xy versus xyY space
Message-ID:
        <CABv0+Est9FD7GhLXM+UbxRhDoxrq7WoOsG6aGsnebPDMd-VTxQ@mail.gmail.com>
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John,

Thanks for the information about 3D diagrams. This will be very helpful (once I become competent at using the tool of course) in my intro E&M class where 3D visualization is often a challenge for students.

Karim Diff