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| German | English |
| Fotowiderstandsmaterial mit hohem spezifischen Widerstand | high-resistivity photoconductive material |
| spektrale spezifische Lichtausstrahlung | spectral radiance (the radiance of a source may vary with wavelength and the spectral radiance is defined as the radiance per unit wavelength interval) |
| spezifische Ausstrahlung | radiant emittance (radiometric quantity: the ratio of radiant flux emitted by a unit area of test surface in a given direction, solid angle, and wavelength interval to that emitted by a black body at the same temperature and under the same conditions) |
| spezifische Ausstrahlung eines Temperaturstrahlers | radiant emittance of a black body |
| spezifische Drehung | specific rotation (optical activity) |
| spezifische Extinktion | absorptivity |
| spezifische Lichtausstrahlung | L (luminous flux radiated per unit area of the surface in all directions) |
| spezifische Lichtausstrahlung | radiance (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) |
| spezifische Lichtausstrahlung als Funktion der Wellenlänge | radiance as a function of wavelength (Nλ) |