Emission may refer to: - Flue gas, also:
- Exhaust gas, flue gas occurring as a result of the combustion of a fuel
- Emission of air pollutants
- Emission (electromagnetic radiation), the process by which the energy of a photon is released by another entity
- Emission (radiocommunications), the radio signal (usually modulated) emitted from a radio transmitter
- Emission coefficient, a coefficient in the power output per unit time of an electromagnetic source
- Emission factor
- Emission line, or "spectral line", a dark or bright line in an otherwise uniform and continuous spectrum
- Emission nebula, a cloud of ionized gas emitting light of various colors
- Emission spectroscopy, mass spectroscopy, photoemission spectroscopy, flame emission spectroscopy and other types of spectroscopy
- Emission standard
- Emission theory, a competing theory for the special theory of relativity, explaining the results of the Michelson-Morley experiment
- Emission theory (vision), the proposal that visual perception is accomplished by rays of light emitted by the eyes
- Emissions trading
- Ejaculation, the ejecting of semen from the penis; also, specifically:
- Light emission
- Thermionic emission, the flow of charged particles called thermions from a charged metal or a charged metal oxide surface, archaically known as the Edison effect
- Noise emission; see Noise
|
