emittance

American  

[ih-mit-ns] / ɪˈmɪt ns /

noun

Optics.

1. the total flux emitted per unit area.

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Etymology

Origin of emittance

First recorded in 1935–40; emit + -ance

Example Sentences

Two teams will test these hypotheses: one led by research scientist Renyu Hu of NASA’s Jet Propulsion Laboratory will examine the planet’s thermal emission for signs of an atmosphere, while a second team led by Alexis Brandeker, an associate professor from Stockholm University, will measure heat emittance from the lit side of 55 Cancri e.

From Scientific American

If the noise was indeed played in by the speaker system, however, Dortmund might well have grounds to challenge the result: Bundesliga regulations prohibit the emittance of any sound in open play.

From The Guardian