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| ray density | |||
| brightness | |||
| radiation density; luminous emittance | |||
| radiant intensity per unit area; 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); radiation intensity | |||
| beam density; irradiance; radiancy | |||
| radiance | |||
| Strahldichte: 3 phrases in 3 subjects |
| Antennas and waveguides | 1 |
| General | 1 |
| Natural sciences | 1 |