emission


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emission

1. energy, in the form of heat, light, radio waves, etc., emitted from a source
2. a measure of the number of electrons emitted by a cathode or electron gun
3. Physiol any bodily discharge, esp an involuntary release of semen during sleep

emission

1. The release of light or other radiation from an excited atom or molecule, or the radiation so emitted. See emission spectrum; nonthermal emission; thermal emission.
2. The liberation of electrons from the surface of a solid or liquid. See photoelectric effect.

emission

[i′mish·ən]
(electromagnetism)
Any radiation of energy by means of electromagnetic waves, as from a radio transmitter.
(meteorology)
A natural or anthropogenic discharge of particulate, gaseous, or soluble waste material or pollution into the air.

emission

The radiation of energy (for example, electromagnetic, heat, light, or sound).
References in periodicals archive ?
Regulatory Norms Make Emission Control Catalysts a Necessity Rather than an Option in Vehicles
Nevertheless, we will continue our focus on optimizing system cost, both with regard to engine out emissions and aftertreatment.
If the justices rule that the federal government must regulate tailpipe emissions, it could free the state and others with similar laws from legal threats.
Introducing domestic emissions trading means that each company has to curtail its own emissions, [as they] have the same amount of emission allowances.
In May 2005, an IMO regulation on engine emission standards for N[O.
Not only is the tragic toll of fine particle pollution well-documented, it's also no secret what the biggest stationary sources of the deadly emissions are: coal-fired power plants.
It is expected that company-or facility-level emission limits will eventually be established and an emissions trading system will be developed, but these elements of Canada's strategy are still taking shape.
Proponents have been working for 20 years to reduce the particulate and gas emissions that contribute to smog, he says.
Some PZEVs actually produce lower levels of emissions than the hybrids," says Violette Roberts, community relations manager of the Mojave Desert Air Quality Management District.
Residential emission credits help the consumer save not only money, but energy itself.