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The color temperature scale describes only the color of light emitted by a light source, which may actually be at a different (and often much lower) temperature. [1] [2] Color temperature has applications in lighting, [3] photography, [4] videography, [5] publishing, [6] manufacturing, [7] astrophysics, [8] and other fields.
Light bulbs for automobiles are made in several standardized series. Bulbs used for headlamps , turn signals and brake lamps may be required to comply with international and national regulations governing the types of lamps used.
Bridging the concepts of color difference and color temperature, Priest made the observation that the eye is sensitive to constant differences in "reciprocal" temperature: [10] A difference of one micro-reciprocal-degree (μrd) is fairly representative of the doubtfully perceptible difference under the most favorable conditions of observation.
There are no actual daylight light sources, only simulators. Constructing a practical light source that emulates a D-series illuminant is a difficult problem. The chromaticity can be replicated simply by taking a well known light source and applying filters, such as the Spectralight III, that used filtered incandescent lamps. [22]
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The CIE 1931 xy chromaticity space, also showing the chromaticities of black-body light sources of various temperatures, and lines of constant correlated color temperature 3D chromaticity diagram of the WideGamutRGB color space. Chromaticity is an objective specification of the quality of a color regardless of its luminance.
The U.S. Food and Drug Administration (FDA) now classifies eggs as a “healthy, nutrient-dense" food, according to a new proposed rule. Registered dietitians react to the change.
After years of waiting for a bigger and better College Football Playoff, the moment has finally arrived.The bracket is set and the games are here. The inaugural 12-team field has a few surprises ...