The mib_blackbody light shader utility is used to determine a color for a light source. It is connected to the color parameters of other light shaders.
A material that absorbes all light directed at it is called a blackbody, since it is devoid of any color. However, every material, when sufficiently heated, will also emit electromagnetic radiation. For a blackbody the spectral distribution of this radiation depends solely on the temperature of the material, and on no other material property. There is a specific color associated with each temperature of such a body. With increasing temperature this color ranges from red over white to blue. Note that the intensity of this radiation will also increase strongly with temperature - an effect that is ignored here by normalizing the color to a provided intensity.
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