 |
| |||
| light emissivity; radiance | |||
| luminance | |||
| luminous exitance | |||
| 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); L (luminous flux radiated per unit area of the surface in all directions) | |||
| luminous emittance | |||
| spezifische Lichtausstrahlung: 3 phrases in 1 subject |
| Optics branch of physics | 3 |