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39.13 Light and Illumination

GSL_CONST_MKSA_STILB
The luminance of 1 stilb.
GSL_CONST_MKSA_LUMEN
The luminous flux of 1 lumen.
GSL_CONST_MKSA_LUX
The illuminance of 1 lux.
GSL_CONST_MKSA_PHOT
The illuminance of 1 phot.
GSL_CONST_MKSA_FOOTCANDLE
The illuminance of 1 footcandle.
GSL_CONST_MKSA_LAMBERT
The luminance of 1 lambert.
GSL_CONST_MKSA_FOOTLAMBERT
The luminance of 1 footlambert.
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