second mind blow: due to the curved, convex shape of the visible light perception, it is impossible to find three light sources that when addictively mixed together will be able to represent every visible color. Mixtures between the colors will always form a triangle between the three colors in the above graph, and there is no triangle that covers the whole space with its vertices corresponding to a color that actually exists.
So there's no way to build a perfect display, at least not by using only three colors.
Today I got the chance to ask our computer graphics professor a question that I asked myself quite some time ago: what the fuck is the color pink?
Like, the color right before infrared is red, the color right before ultraviolet is violet. And every other color is some wavelength between those two colors. EXCEPT FOR PINK!?
On a hue color wheel pink is between red and violet, so it's wavelength has to be somewhere around there, right??
Well, turns out pink is the color humans perceive when red and violet are mixed (duh), meaning the red and blue cones are stimulated. Since both cones respond to wavelengths on the opposite ends of the visible spectrum, there is no monochromatic wavelength that would trigger both, hence there is no wavelength that looks pink.
That's also the reason pink does not appear in a rainbow, because there white sunlight light, a mixture of (almost, hi Astro-fedi) all monochromatic wavelengths, is refracted based on wavelength, so no mixed colors occur in it.
@Mitsu Caribou thought?! In my French class, when our book had a whole section on Quebec, I really wanted to go there. Have you been to this underground mall yet?
@kaia@mametsuko from what I've heard (and experienced myself last Friday and Sunday travelling to Vienna) Austria doesn't check in trains, but when entering Bavaria there is a check on the first stop in Germany (aka they walk through the train and pick one non German speaking person to ask for their passport)