thermionic emission
emission [e-mish´un]
thermionic emission (thur´mīonik imish´
n),
[ther′mī·on′ik]
the emission of electrons and ions by incandescent bodies.
emission [e-mish´un]
1. a discharge.
2. an involuntary discharge of semen.
nocturnal emission reflex emission of semen during sleep.
thermionic emission the application of heat, such as to a filament, resulting in the emission of electrons and ions.
thermionic emission (thur´mīonik imish´
n),n the release of electrons when a material is heated (e.g., electron emission when the tungsten cathode filament of a radiographic tube is heated to incandescence by means of its low-voltage heating circuit).
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