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OK, well, are there any colours which are not representable with two frequencies? That is still less than three dimensions.
by shawnz 9y ago
OK, well, are there any colours which are not representable with two frequencies? That is still less than three dimensions.
- krallja 9y agoWhite.
- shawnz 9y agoIsn't that representable with a mixture of blue and yellow light?
- tbabb 9y agoYou can pick a blue and a yellow and a proportion at which to mix them which will produce white, but for any two primaries you pick, there are a multitude of colors you can't represent. For example, if your basis is blue-yellow as you suggest, then you can't represent red or green (and an infinity of other colors off-axis). Fundamentally the chromaticity diagram[1] is 2D (with a third axis for intensity). You need to mix at least three points to span the space of the plane. [1] https://dotcolordotcom.files.wordpress.com/2012/08/anatomy-of-a-cie-diagram2x.png https://dotcolordotcom.files.wordpress.com/2012/08/anatomy-o...