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the man of twists ... (2)

'how everyday technology fools our brains into seeing more'

Colour Mixing: The Mystery of Magenta [more inside]
posted by the man of twists and turns on Aug 15, 2014 - 48 comments

"it seems unnatural to look at a color and think of it in terms ... RGB"

Color Spaces:
It has been known for some time that colors can be described by three numbers. If I show you light of a certain color and ask you to match it by combining lights of three other colors and varying their intensities, you'll typically be able to find a combination that looks indistinguishable. But the wavelengths you combine might be very different from the wavelengths I showed you. Light of the wavelength corresponding to yellow and light of the right combination of red and green wavelengths will look the same, even though they are physically quite different.
[more inside]
posted by the man of twists and turns on Mar 31, 2013 - 26 comments

tl;dr

The Chroma Upsampling Error. This incredibly detailed explanation of a common bug in DVD players will likely either bore you to tears or be gripping and utterly fascinating.
posted by 31d1 on May 13, 2008 - 43 comments

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