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From: DrKnow@cup.portal.com
Newsgroups: sci.misc
Subject: Colors
Message-ID: <1793@cup.portal.com>
Date: Fri, 4-Dec-87 06:19:47 EST
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Posted: Fri Dec  4 06:19:47 1987
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kadie@uiucdcsb.cs.uiuc.edu  Asks:
>
> On TV's and computer screens, why is it RGB (red, green, blue)
> instead of RYB (red, yellow, blue) then primary colors?

Although I am not familiar with the details, I know it has something
to do with the fact that the colors coming from a C.R.T are being
GENERATED by the tube, not reflected.  In the case of colors being
generated by a device, red, green, and blue are the primary colors.

Hope that helps!


p.s. - This is my first posting to usenet.  If I have done anything wrong
       please let me know.