In my philosophy career / epistemology classes, we would occasionally discuss the color "grue" Perhaps we should have been using "magenta" all along.
The colour magenta does not exist anywhere in the spectrum of visible light, and your brain manufactures it on the spot whenever red and blue cones fire together, inventing a hue to fill a gap that ph
Stare at a rainbow and try to find magenta. It will not be there. The visible spectrum runs from roughly 700 nanometre red at one end to about 380
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