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Glite Dictionary
🌡️ Energy release 🔬 Beam spread
emittance

emittance

1 8.2
A number that shows how well a surface gives off heat as radiation
  • noun
  • /ɪˈmɪtəns/
  • Specialized
translation icon : emisión
  • Infrared emittance is the measure of how much radiation a surface re-emits to the atmosphere.

Examples

  • Scientists measure the emittance of different materials to understand their energy efficiency.

  • If you saw the emittance spectrum of a fluorescent light graph, it would look like three or slightly more large spikes.

    Blog text (20)

  • Infrared emittance indicates how effectively a surface radiates heat back into the atmosphere.

  • The low emittance of the material helps reduce heat loss in buildings.

Synonyms

emission
vsemittance
57 3.5

An act of releasing something like gas, steam, light, or heat from a source

is focused also on how effectively radiation is emitted rather than just the act
emanation
vsemittance
5 8.3

Something that comes out from a place, like gas, light or a smell

is about the act or measure of emitting energy not the emitted thing or feeling
emissivity
vsemittance
  • Specialized
3 9.9

How well a surface gives off heat as invisible waves

is broader, covering both the act of release and its efficiency
extramission
vsemittance
  • Specialized
9.9

The sending out of light or small particles from a source

focuses on how well radiation is given off instead of only the process

How Emissive

emittance
  • Specialized
1 8.2
non-radiation
  • Specialized
6.6

Surface Forms

emittance singular
emittances plural

Morphology

emittance = emit + emitt (transparent) = emit + tance + ance

Standard noun formation from the verb 'emit' with the suffix '-ance', giving the act or property of emitting.

Etymology

Emittance comes from the verb emit, which means 'to send out', and from the parts e- 'out' and mittere 'to send'. So emittance is the amount something 'sends out', which fits measuring how much heat or light a surface gives off.