TERMIUM Plus®

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ABSOLUTE PERMITTIVITY [1 record]

Record 1 2011-05-31

English

Subject field(s)
  • Electromagnetic Radiation
  • Metrology and Units of Measure
DEF

The electrical characteristic of a dielectric in relation to the surrounding electrostatic field.

OBS

A dielectric material is a substance that is a poor conductor of electricity, but an efficient supporter of electrostatic fields. Most dielectric materials are solid. Such examples include porcelain (ceramic) mica, glass, plastics, and the oxides of various metals. Liquids and gases can also serve as good dielectric materials: dry air (used in variable capacitors and some types of transmission lines), or a vacuum.

OBS

permittivity: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Rayonnements électromagnétiques
  • Unités de mesure et métrologie
DEF

Coefficient qui caractérise un corps isolant (ou diélectrique).

OBS

Un matériau diélectrique tel le vide, l'air ou le mica ne conduit pas le courant électrique.

OBS

permittivité : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Campo(s) temático(s)
  • Radiación electromagnética
  • Metrología y unidades de medida
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