Light & Color

Green Lips

The three black and white transparencies are different from each other. Each transparency was produced by photographing a full color photograph with black and white film and with a colored filter in front of the camera lens. All colors visible to the human eye can be approximated by mixing three primary colors. White light is made up of all colors. If a mixture of red, green, and blue light is properly balanced, white light results, demonstrating that color vision is an additive process. If one colored light is blocked with a hand or with the paddle, it is subtracted from the total.