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IEVref:121-12-10ID:
Language:enStatus: Standard
Term: dielectric medium
Synonym1: dielectric, n
[Preferred]
Synonym2:
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Definition: medium which can be electrically polarized and in which a time-varying electric field produces an electric current density the vector component of which in a given direction has a magnitude small compared with that of the vector component of the displacement current density in this direction, in a particular frequency band

NOTE 1 – For sinusoidal conditions in an isotropic medium, the medium is dielectric if the following relation is satisfied:

γ ε 0 ω ε r MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbbjxAHXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeqabiGaciGacaqadmaadaqaaqaaaOqaamaalaaabaGaeq4SdCgabaGaeqyTdu2aaSbaaSqaaiaaicdaaeqaaOGaeqyYdChaaiablUMi=iqbew7aLzaafaWaaSbaaSqaaiaabkhaaeqaaaaa@3F99@

where γ is the conductivity, ε0 the electric constant, ω the angular frequency and εr the real relative permittivity.

NOTE 2 – An anisotropic medium may be dielectric only in certain directions.


Publication date:1998-08
Source:705-03-07 MOD
Replaces:
Internal notes:2017-06-02: Cleanup - Remove Attached Image 121-12-10.gif
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