Color temperature | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-21

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Color_temperature


00:01:32 1 Categorizing different lighting
00:03:18 1.1 The Sun
00:04:48 2 Applications
00:04:57 2.1 Lighting
00:05:46 2.2 Aquaculture
00:07:20 2.3 Digital photography
00:08:27 2.4 Photographic film
00:11:41 2.5 Desktop publishing
00:13:19 2.6 TV, video, and digital still cameras
00:15:07 2.7 Artistic application via control of color temperature
00:17:13 3 Correlated color temperature
00:17:37 3.1 Motivation
00:18:31 3.2 Background
00:20:49 3.3 Calculation
00:24:51 3.3.1 Robertson's method
00:26:49 3.4 Precautions
00:31:44 3.5 Approximation
00:32:50 4 Color rendering index
00:33:19 5 Spectral power distribution
00:34:27 6 Color temperature in astronomy
00:36:30 7 See also
00:37:02 8 References
00:37:45 9 Further reading
00:39:07 10 External links



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SUMMARY
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Not to be confused with warm and cool colors.
The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of a color comparable to that of the light source. Color temperature is a characteristic of visible light that has important applications in lighting, photography, videography, publishing, manufacturing, astrophysics, horticulture, and other fields. In practice, color temperature is meaningful only for light sources that do in fact correspond somewhat closely to the radiation of some black body, i.e., light in a range going from red to orange to yellow to white to blueish white; it does not make sense to speak of the color temperature of, e.g., a green or a purple light. Color temperature is conventionally expressed in kelvins, using the symbol K, a unit of measure for absolute temperature.
Color temperatures over 5000 K are called "cool colors" (bluish), while lower color temperatures (2700–3000 K) are called "warm colors" (yellowish). "Warm" in this context is an analogy to radiated heat flux of traditional incandescent lighting rather than temperature. The spectral peak of warm-coloured light is closer to infrared, and most natural warm-coloured light sources emit significant infrared radiation. The fact that "warm" lighting in this sense actually has a "cooler" color temperature often leads to confusion.