EARTH SCIENCE > SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > VISIBLE RADIANCE
In radiometery, a measure of the intrinsic radiant intensity emitted by
a radiator in a given direction. Radiance is measured in watts per square
meter and steradian.
Glossary of Meteorology, American Meteorological Society, 1998.
Sensing: Optics and Optical Systems, Philip N. Slatter, 1980.