How does additive color mixing work?
Additive mixing happens when two or more light sources are superimposed by either illuminating the same spot or by being so close together in space and time that oure visual systems cannot distinguish them. What we perceive is the sum of the energy from each of the lights. This is how computer displays and televisions reproduce color. Red, green, and blue are common additive primaries since it is easy and efficient to makea wide variety of colors with them.
