Complementary Colors: When 2 colors are added together to produce white. Red and cyan = white green and magenta = white yellow and blue = white
Mixing colored paints is different than mixing light. If you mix red and green paint you get brown. Paints do not reflect a single color of light. They reflect several colors. Color subtraction is on page 429 – 431. Read these pages.
This scattering of the higher frequencies of light illuminates the skies with light on the BIV end of the visible spectrum.
Compared to blue light, violet light is most easily scattered by atmospheric particles; however, our eyes are more sensitive to light with blue frequencies. Thus, we view the skies as being blue in color.
During sunset hours, the light passing through our atmosphere to our eyes tends to be most concentrated with red and orange frequencies of light. For this reason, the sunsets have a reddish-orange hue