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Color theory, or more specifically traditional color theory, is the historical body of knowledge describing the behavior of colors, namely in color mixing, color contrast effects, color harmony, color schemes and color symbolism. [1] Modern color theory is generally referred to as Color science.
Color blindness may also present itself as a symptom of degenerative diseases of the eye, such as cataract and age-related macular degeneration, and as part of the retinal damage caused by diabetes. Vitamin A deficiency may also cause color blindness. [46] Color blindness may be a side effect of prescription drug use.
If the emission or reflection spectrum of a color is 1 (100%) for all the wavelengths between A and B, and 0 for all the wavelengths in the other half of the color space, then that color is a maximum chroma color, semichrome, or full color (this is the explanation to why they were called semichromes). So maximum chroma colors are a type of ...
The Michigan legislature prohibited the sale of liquor in 1917, three years before national Prohibition was established by a constitutional amendment. [1] [2] Along with temperance supporters, industrialist Henry Ford owned the River Rouge plant and desired a sober workforce, so he backed the Damon Act, [2] a state law that, along with the Wiley Act, prohibited virtually all possession ...
The carrot (Daucus carota subsp. sativus) is a root vegetable, typically orange in color, though heirloom variants including purple, black, red, white, and yellow cultivars exist, [2] [3] all of which are domesticated forms of the wild carrot, Daucus carota, native to Europe and Southwestern Asia.
Kellogg's introduced Froot Loops in 1963. [4] Originally, there were only red, orange and yellow loops; green, blue and purple loops were added during the 1990s, with blue being introduced last in 1996.
In 1995, the company ran the M&M's Color Campaign, a contest in which participants were given the choice of selecting purple, blue, or pink as the color of a new variety of M&M's. The announcement of the winning color (blue) was carried on most of the television networks' news programs, as well as the talk shows of David Letterman and Jay Leno ...
A rainbow is a decomposition of white light into all of the spectral colors. Laser beams are monochromatic light, thereby exhibiting spectral colors. A spectral color is a color that is evoked by monochromatic light, i.e. either a spectral line with a single wavelength or frequency of light in the visible spectrum, or a relatively narrow spectral band (e.g. lasers).