emittance
/ɪˈmɪtəns/
noun
- The amount of energy, light, or radiation given off by a surface or source.
- The solar panel's efficiency depends on the emittance of the sun's rays.
- The emittance of the LED bulb was measured in lumens per watt.
- Scientists studied the emittance of heat from the volcano's lava flow.
Antonyms