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For example, to see "hyperbolic orange": staring at bright cyan causes an orange afterimage, then on looking at orange, the resulting orange afterimage seen against the orange background may cause an orange color purer than the purest orange color that can be made by any normally seen light.
Apperceptive agnosia is failure of object recognition even when the basic visual functions (acuity, color, motion) and other mental processing, such as language and intelligence, are normal. [9] The brain must correctly integrate features such as edges, light intensity, and color from sensory information to form a complete percept of an object.
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This is an accepted version of this page This is the latest accepted revision, reviewed on 28 February 2025. Varieties of the color violet Violet Spectral coordinates Wavelength 380–450 nm Frequency 800–715 THz Color coordinates Hex triplet #8000FF sRGB B (r, g, b) (128, 0, 255) HSV (h, s, v) (270°, 100%, 100%) CIELCh uv (L, C, h) (41, 134, 275°) Source W3C B: Normalized to [0–255 ...
The color sunset is a pale tint of orange. It is a representation of the average color of clouds when the sunlight from a sunset is reflected from them. The first recorded use of sunset as a color name in English was in 1916. [1]
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Shade, Shades or Shading may refer to: Shade (color), a mixture of a color with black (often generalized as any variety of a color) Shade (shadow), the blocking of sunlight; Shades or sunglasses; Shading, a process used in art and graphic design; Shade (mythology), the spirit or ghost of a dead person "Throw shade", slang term for an insulting ...
Photophobia is a medical symptom of abnormal intolerance to visual perception of light. [1] As a medical symptom, photophobia is not a morbid fear or phobia, but an experience of discomfort or pain to the eyes due to light exposure or by presence of actual physical sensitivity of the eyes, [2] though the term is sometimes additionally applied to abnormal or irrational fear of light, such as ...