![]() Therefore, when you shine a red and green light onto a white screen, it reflects both red and green photons, exciting both "red" and "green" photoreceptors in your eye, which the brain interprets then as yellow. The same reasoning goes to the "red" receptors, which respond well to red (632nm, for example), but the yellow (589nm) also affects them somewhat. Each of them has a broad ish response function which means, that the "green" receptors react well to pure green light (as in 555nm), but also are somewhat excited by yellow (589nm) and hardly respond to red (>600nm). The way humans perceive color is by having three types of photoreceptors in their eyes. This may be a source of your misunderstanding. I also don't think that it's a coincidence that magenta does not lie on the rainbow, is nevertheless perceivable, and that it reflects.blue-yellow? Reflect out red and green, components of a forbidden color. ![]() Unknown reason, not on the visible spectrum but still perceivable, it I don't think it's a coincidence that while brown is, for some The highly interesting thing is, brown absorbs all other colors but reflects red and green. They are caused because the cones devoted to complimentary colors will cancel each other out. Now this is where it gets VERY interesting: There are forbidden colors, colors that cannot be perceived by the human eye though they are a mix of perceivable colors. How is it possible that we can see it?Įven stranger, brown as a color is produced with red and green, but when you mix red and green light, it makes yellow. While researching about lasers (it's my hobby), it suddenly hit me: there are lasers for every color of the visible spectrum, but there are no brown lasers.īrown isn't even on the rainbow.
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