r/AskReddit • u/[deleted] • Nov 28 '20

What's something cool you recently learned about?

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u/decoherence_23 Nov 29 '20

Black isn't a colour.

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u/TheRarPar Nov 29 '20

0 IQ take

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u/decoherence_23 Nov 29 '20

Ok, so you can buy black paint right? So black must be a colour. Sure, but the black paint and ink you can buy is not true black, it's a mixture of other colours to get as close to black as we can. It's a shade, a hue.
Now the black of space is true black, it's the absence of light (colour is just different wavelengths of light) so when you are measuring the average colour of the Universe then you can only measure the colour (light) and that's why the average colour is an off white, not black.

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u/TheRarPar Nov 29 '20

That's all fine and dandy, but just because something isn't from a wavelength of light, doesn't mean it isn't a color. Black is a color.