Colour constancy is achieved by chromatic adaptation. The Global Fee on Illumination defines white (tailored) as "a colour stimulus that an observer that's [chromatically] adapted to the viewing ecosystem would judge to get perfectly achromatic and to have a luminance factor of unity. White is also linked to peace and https://umbrellacockatooforsaleuk06022.bloggerswise.com/43470573/rose-breasted-cockatoo-no-further-a-mystery