colour
colour Sensation experienced when light of sufficient brightness and of a particular wavelength strikes the retina of the eye. The colour of an object is normally the colour it reflects. For example, a blue car absorbs all colours except blue which is reflected. Normal daylight (white light) is made up of a spectrum of colours, each a different wavelength. These colours can be placed in seven bands – red, orange, yellow, green, blue, indigo and violet – of decreasing wavelength. A pure spectral colour is called a hue. If the colour is not pure but contains some white, it is ‘desaturated’ (tint). Saturation is the degree to which a colour departs from white and approaches a pure hue. A colour may also have luminosity (brightness) which determines its shade. Any colour is perceived as a mixture of three primary colours: red, green, and blue in light; or red, yellow, and blue in paint. A colour created by combining two primary colours is called a secondary colour.
colour
colour (tone-colour). It is impossible for mus. to convey colours, but it is customary to speak of ‘colouring’ or ‘tone-colour’ where variations of timbre or tone are prod. by different intensities of the overtones of sounds. ‘Shade’ is perhaps a more accurate term, since the differences are often those of ‘darker’ or ‘lighter’ sound. But in his tone-poem Prometheus: The Poem of Fire, Op.60, Scriabin introduced a colour kbd. to project colours on to a screen, intended to convey the mood of the mus. The colour-organ was used for this purpose.
colour
More From encyclopedia.com
Color , Color
Color is a complex and fascinating subject. Several fields of science are involved in explaining the phenomenon of color. The physics of light… azure , az·ure / ˈazhər/ • adj. bright blue in color, like a cloudless sky. ∎ Heraldry blue. • n. 1. a bright blue color. ∎ poetic/lit. the clear sky. 2. a s… Blue Shark , blue shark (Prionace glauca) See CARCHARHINIDAE.
Prionace glauca (blue shark) See CARCHARHINIDAE. Blue Marlin , blue marlin (Makaira nigricans) See ISTIOPHORIDAE.
Makaira nigricans (blue marlin) See ISTIOPHORIDAE. Rayleigh Scattering , Why is the sky blue, and why are sunsets red? The answer is Rayleigh scattering. When light strikes small particles, it bounces off in different dire… Blue , blue traditionally seen as the colour of constancy, as well as the colour of sorrow and anguish, and of plagues and hurtful things. It is also associ…
About this article
colour
All Sources -
You Might Also Like
NEARBY TERMS
colour