dielectric heating

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dielectric heating

n.
The heating of electrically nonconducting materials by a rapidly varying electromagnetic field.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

dielectric heating

n
(General Physics) a technique in which an insulator is heated by the application of a high-frequency electric field
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.dielectric heating - heating of an insulator by a high-frequency electric field
electrical phenomenon - a physical phenomenon involving electricity
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Microwaves make possible selective, fast treatments because polar compounds rapidly generate heat thanks to dipole rotation. The microwave-induced superheating of cell materials within the plant matrix may also improve the release of pigments.
The electromagnetic energy upsets the hydrogen bonds associated with the dipole rotation of polar molecules.
Materials disperse microwave energy by two main methods: ionic conduction and dipole rotation. The molecules with permanent dipoles align as a result of the exposure of the microwave electric energy.