🚀 go-pugleaf

In article <162300002@uiucdcsb>, kadie@uiucdcsb.cs.uiuc.edu writes:
> 1) On TV's and computers screens, why is it RGB (red, green, blue)
> instead of RYB (red, yellow, blue) the primary colors?
> 
> 2) Some light wave length produces the color green. A mixture of
> the wave lengths of blue and yellow also produces green.
> Even though these two greens are indistinguishable to our eyes, are there
> (could there be) instruments that distinguish them?

1) RGB are primary colors for mixing light (eg. red light plus green light
gives "yellow" light). When you are mixing paint, remember that paint
absorbs light, so mixing red & green paint makes this icky brownish grey,
because the mixture absorbs both red and green colors.

2) Simple instruments that will distinguish them are prisms, diffraction
gratings, and fog (rainbows).

-- 
Craig Hansen
Manager, Architecture Development
MIPS Computer Systems, Inc.
...{ames,decwrl,prls}!mips!hansen or hansen@mips.com