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Newton deemed those three colors the "primary" colors since they were the basic ingredients needed to create clear, white light. When he was 23 years old, Isaac Newton made a revolutionary discovery: By using prisms and mirrors, he could combine the red, green and blue (RGB) regions of a reflected rainbow to create white light. Let's talk about the additive system first. Let's get into those distinctions - but fair warning: everything you know about primary colors is about to change before your eyes. The subtractive primaries also modulate red, green and blue light, but a little less directly." The additive primaries do this very directly by controlling the amounts of red, green and blue light that we see and therefore almost directly map to the visual responses. Those are roughly sensitive to red, green and blue light. "That is to modulate the responses of the three types of cone photoreceptors in our eyes. "Both systems are accomplishing one task," says Mark Fairchild, professor and director of the Program of Color Science/Munsell Color Science Laboratory at Rochester Institute of Technology in New York. This leads to two types of colour mixing, additive and subtractive." "Light enters our eyes in two ways: (1) directly from a light source and (2) reflected from an object. "We see because light enters our eyes," he says. Stephen Westland, Professor of Colour Science at the University of Leeds in England breaks things down into simple terms (before getting into the confusing complexities), in an email.
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