Radiant power , in a given direction, per unit solid angle per unit of projected area of the source, as viewed from the given direction. Note: Radiance is usually expressed in watts per steradian per square meter. ( 188 )
RADIANCE
Meaning of RADIANCE in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012