IEVref: 705-03-08 ID: Language: en Status: Standard Term: perfect dielectric Synonym1: ideal dielectric [Preferred] Synonym2: Synonym3: Symbol: Definition: an ideal dielectric medium in which a variable electric field produces an electric current density vector $\stackrel{\to }{J}$ of zero magnitude in a given direction in a particular frequency band NOTE 1 – For a homogeneous medium, the medium is a perfect dielectric in a given direction if the conductivity σ may be considered zero in this direction. NOTE 2 – Vacuum is a perfect dielectric at any frequency. Publication date: 1995-09 Source: Replaces: Internal notes: 2017-06-02: Cleanup - Remove Attached Image 521-09-023.gif CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: