Definitions
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the emission of electrons from very hot substances
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Examples
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john commented on the word thermionic emission
“The classical example of thermionic emission is the emission of electrons from a hot metal cathode into a vacuum (archaically known as the Edison effect) in a vacuum tube. However, the term "thermionic emission" is now used to refer to any thermally excited charge emission process, even when the charge is emitted from one solid-state region into another.”
Thermionic emission. (2010, March 3). In Wikipedia, The Free Encyclopedia. Retrieved 00:42, April 8, 2010, from http://en.wikipedia.org/w/index.php?title=Thermionic_emission&oldid=347447926
April 8, 2010