colour

(redirected from School colors)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

col·or

(kŭl'ŏr)
1. That aspect of the appearance of objects and light sources that may be specified as to hue, lightness (brightness), and saturation.
2. That portion of the visible (370-760 nm) electromagnetic spectrum specified as to wavelength, luminosity, and purity.
Synonym(s): colour.
[L.]

colour 

An aspect of visual perception, characterized by the attributes of hue, brightness and saturation, and resulting from stimulation of the retina by visible photopic light levels. Note: also spelled color.
achromatic colour A visual sensation resulting from a stimulus having brightness, but devoid of hue or saturation, e.g. white, grey.
colour agnosia See agnosia.
colour blindness 
See colour blindness.
complementary colour One of a pair of colours which, when mixed additively, produce white or grey (that is to say an achromatic sensation). Examples: green is the complementary colour of red-purple and yellow is the complementary colour of blue. See chromaticity diagram.
confusion colour's Colours that are confused by a dichromat. The colours confused by a deuteranope, a protanope and a tritanope are not the same. For example, the deuteranope will confuse reds, greens and greys, whereas the protanope will confuse reds, oranges, blue-greens and greys. See pseudoisochromatic plates.
colour constancy See colour constancy.
colour contrast See colour contrast.
defective colour vision Marked departure of an individual's colour vision aptitude from that of a normal observer. This is indicated by various tests, e.g. anomaloscope, pseudoisochromatic plates, Farnsworth test. The following types of defective colour vision are usually recognized: anomalous trichromatic vision or anomalous trichromatism; dichromatic vision or dichromatism; monochromatic vision or monochromatism (total colour blindness), anomaly of vision in which there is perception of luminance but not of colour. Both anomalous trichromatism and dichromatism occur in three distinct forms called respectively protanomalous vision and protanopia, deuteranomalous vision and deuteranopia, tritanomalous vision and tritanopia.The causes of defective colour vision may be an impairment of a cone pigment or a reduced number of cone cells. The majority of cases of defective colour vision are inherited and thus bilateral. Acquired defects are rare, mostly tritanopic and appear in one eye or are asymmetric, and affect males and females equally. They may be due to glaucoma, retinal or optic nerve disease, drug or chemical toxicity, diabetes, retinitis pigmentosa, etc. Hence it is essential to test colour vision under monocular conditions. The inherited type occurs as a sex-linked disorder in which the defective gene is on the X chromosome. Since men have only one X chromosome while women have two, sex-linked disorders (most being X-linked recessive) affect mainly males who inherit the genetic defect from their mother. Inherited tritanopia and tritanomaly are usually autosomal dominant. For women to show the defect, both of their X chromosomes have to carry the defective gene, a rare occurrence. Defective colour vision occurs in about 8% of the male population and 0.5% of the female population. Syn. daltonism. See achromatopsia; anomaloscope; deuteranomaly; deuteranopia; inheritance; ChromaGen lens; X-Chrom lens; monochromat; visual pigment; protanomaly; protanopia; Kollner's rule; colour vision test; tritanomaly; tritanopia.
colour fringes Coloured edges around images formed by a lens or an optical system which is not corrected for chromatic aberration.
fundamental colour's See primary colours.
colour induction See colour induction.
colour matching Action of making a colour appear the same as a given colour.
metameric colour Spectrally different radiations that produce the same colour under the same viewing conditions. Note: The corresponding property is called metamerism. Syn. metamers (CIE).
colour mixture The production of a colour by mixing two or more lights of different colours (additive colour mixture) or two or more pigments (subtractive colour mixture). See complementary colour; primary colours.
Munsell colour See Munsell colour system.
non-spectral colour Any colour that does not exist as a single wavelength. Example: purple, which is a mixture of blue and red radiations. See purple.
primary colour's Any sets of three colours such as, for example, red, green and blue, which, by additive colour mixture of the stimuli in varying proportions, can produce any colour sensation. Syn. fundamental colours.
spectral colour's The colours produced by the various radiations of the visible spectrum. See light.
colour space See space, colour.
colour stereoscopy 
See chromostereopsis.
surface colour Colour perceived as belonging to a surface of an object which is not self-luminous.
colour temperature The temperature of the surface of an ideal black body which emits radiations of the same chromaticity as that from the source being specified. As the temperature increases, the amount of radiations increases and the source changes colour from red through to white to blue-white. Unit: Kelvin (symbol: K).
colour triangle See chromaticity diagram.
colour vision See colour vision.
colour vision, aetiology of See defective colour vision.
References in periodicals archive ?
While the court gives their approval to "limited edition" paintings and prints which feature the school colors and football uniforms, the court is careful to note that artistic works that also use the protected logos of the university will infringe the plaintiff's trademarks.
Each candle features the logo and school color plus authentic, long-lasting Yankee Candle fragrance and is available in a large jar candle ($27.
Colorful or patterned crosswalks, many displaying local school colors, have one goal: to save lives.
Base front and side padding is 2" thick urethane with heavy vinyl cover available in 12 popular school colors.
Even if you spotted the Taft of Woodland Hills school colors and logo, it was easy to miss Jamere Holland.
The iconic floral provider offers handcrafted fresh roses in official school colors - the perfect year-round gift for devoted college fans, students, alumni and sweethearts
The U and UAF school colors will proudly fly between our two largest cities and from Anchorage to Kodiak.
30 /PRNewswire/ -- The Lamar University team of Matt Morrison of Silsbee, Texas, and Danny Iles of Hemphill, Texas, led all three days of competition at the National Guard FLW College Fishing Texas Division Regional Championship on Sam Rayburn Reservoir and weighed a day three six-bass catch weighing 12 pounds, 6 ounces for a three-day total of 51-4 to win a top prize of $50,000, which includes a Ranger boat and outboard wrapped in school colors for the winning club and $25,000 for the school they represent.
Students earlier this year chose "Cougars" as a new nickname, and blue and silver as the new school colors.
Anytime a prospect is walking across campus, he sees all the tradition, all the school colors, everyone dressed up that way.
The flowers and vase are carefully wrapped and arrive in a special gift box bearing school colors and logo.
2 rescue ambulances, in the school colors award 4th lot.

Full browser ?