dielectric heating
Noun
Meaning
heating of an insulator by a high-frequency electric field
Source: WordNetHypernyms
Examples
In 1955 Dr. James Lovelock was able to reanimate rats frozen at 0 °C using microwave diathermy. citation When injury from exposure to microwaves occurs, it usually results from dielectric heating induced in the body.
Dielectric loss is caused when the insulating material inside the transmission line absorbs energy from the alternating electric field and converts it to heat (see dielectric heating ).
Nevertheless, the primary heating effect of all types of electromagnetic fields at both radio and microwave frequencies occurs via the dielectric heating effect, as polarized molecules are affected by a rapidly alternating electric field.