color temperature

color temperature
(CCT)
   a measure of the overall "color" of a light source. The measurement is obtained by comparing the spectrum, or mix of colors (wavelengths of light), produced by the light source to the spectrum of a "black body," a theoretical object that absorbs all radiation falling on it. (A black body is also a perfectly efficient radiator of energy, its spectrum depending only on its temperature.). The measurement is expressed in kelvins (K). Lower temperatures indicate more red and yellow light, higher temperatures more blue. Incandescent light bulbs are "cool" with a color temperature of about 2800 K, while daylight at noon is much "hotter" (bluer) at about 6000 K. Fluorescent lighting can be produced with a broad range of color temperatures including everything between these two values. "CCT" stands for "correlated color temperature."

Dictionary of units of measurement. 2015.

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  • Color temperature — The CIE 1931 x,y chromaticity space, also showing the chromaticities of black body light sources of various temperatures (Planckian locus), and lines of constant correlated color temperature. Color temperature is a characteristic of visible light …   Wikipedia

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  • color temperature — noun Date: 1916 the temperature at which a blackbody emits radiant energy competent to evoke a color the same as that evoked by radiant energy from a given source (as a lamp) …   New Collegiate Dictionary

  • color temperature — noun : the temperature at which a blackbody emits radiant energy competent to evoke a color or the same hue and saturation as that evoked by radiant energy from a given source (as a lamp) …   Useful english dictionary

  • Color Temperature —   A measure of the quality of a light source by expressing the color appearance correlated with a black body …   Energy terms

  • Color temperature — PP The hue of the color, with lower ( colder ) values towards the blue end of the spectrum and higher ( warmer ) values towards the red end. Measured in Kelvin (K) …   Audio and video glossary

  • color temperature — Смотри цветовая температура …   Энциклопедический словарь по металлургии

  • color temperature — TV Relative amount of white light s reddish or bluish qualities, measured in degrees Kelvin. Desirable readings for video are 3,200K indoors, 5,600K outdoors. (See artificial, natural light) …   Audio and video glossary

  • Color photography — Color film redirects here. For the motion picture equivalent, see Color motion picture film. A circa 1850 Hillotype photograph of a colored engraving. Long believed to be a complete fraud, recent testing found that Levi Hill s process did… …   Wikipedia

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