Colors-Nitpicking

[jodel at aol.com]

No: HPFGUIDX 48687

Ally states;

<< Now green and red are opposites on the spectrum - if you take a green-red 
colour wheel and spin it very fast, they cancel each other out and you get 
white. >>

Er, not quite. Red and green are opposites in the *subtractive* color wheel, 
which is to say, the pigment color wheel. And added together get grey/black.

In the pure *additive* color wheel, which is to say, colored *light*, red and 
green are both primary colors and added together produce the secondary color, 
yellow (as indeed happend in the duel in the churchyard.) In the additive 
color wheel red's opposite is cyan (green/blue) and green's is magenta.

(There is also the 'practical' color wheel used in film developing which uses 
the additive secondary colors [cyan, magenta, yellow] in a subtractive 
process to break apart white light into its visible components to get the 
full visible spectrum of colors, including the additive primaries of red, 
green and blue.)

-JOdel