Sir Thomas Young proposed the existence of only three color receptors. How would he explain our sensation of so many other colors?
◦ He could not explain our sensation of other colors, although many years later another scientist did.
◦ All other colors are additive or subtractive combinations of the colors he identified.
◦ Our brains "learn" to sense other colors, but only after experience with the first three.
◦ All other colors were afterimages of the three colors he identified.