Why does blue and yellow make green?

Answer 1

If you think in terms of energy in gets very simple and logical. If you have green light with energy E1 and red light with energy E2 (clearly E1 > E2), result of their mixing will some energy E = a*E1+bE2, where a and b fraction coefficients for both lights (a, b <=1, a + b =1). For instance, if you have only green light a = 1, b = 0, if you have only read light a = 0, b = 1. If you mix with a and b not equal to zero you will get result E2 < E < E1, but light with energy satisfying such inequality is yellow and orange (and their mix).

Answer 2

Blue and yellow make green because when light hits an object, certain colors are absorbed while others are reflected. Blue and yellow light wavelengths are absorbed by certain pigments in the object, while green light is reflected, resulting in the perception of the color green.

Answer 3

yellow and blue make green so that's none of your buisness

Answer 4

Actually they combine to produce white light because they are both complementary colors of light. :)