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spezifische Lichtausstrahlung (radiometric quantity; it is a measure of the brightness of a radiating surface; it is defined as the radiant energy emitted in a specified direction per unit time, per unit projected area of surface, per unit solid angle; it is measured in watts per steradian per square centimetre or square metre); Strahldichte f (radiometric quantity; it is a measure of the brightness of a radiating surface; it is defined as the radiant energy emitted in a specified direction per unit time, per unit projected area of surface, per unit solid angle; it is measured in watts per steradian per square centimetre or square metre) |
