![]() ![]() We call this set of three colors-red, green, and blue-the additive primaries of light. ![]() ![]() The screen looks white because these three colored lights stimulate the three types of cones in your eyes approximately equally, creating the sensation of white. When lights of different colors shine on the same spot on a white surface, the light reflecting from that spot to your eyes is called an additive mixture because it is the sum of all the light.Īt this exhibit, a red light, a blue light, and a green light are all shining on the screen.
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