Permittivity (Relative)

Available identifiers

WikidataQ4027242 ScholiaQ4027242MaRDI QIDQ6674103

permittivity of a material expressed as a ratio with the electric permittivity of a vacuum

Description

The relative permittivity (in older texts, dielectric constant) is the permittivity of a material expressed as a ratio with the electric permittivity of a vacuum. A dielectric is an insulating material, and the dielectric constant of an insulator measures the ability of the insulator to store electric energy in an electrical field. Permittivities may be complex and frequency-dependent.

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Defining Formula: ${\epsilon }_{\mathrm{r}}\equiv \frac{\epsilon }{{\epsilon }_0}$

$\epsilon$ symbol represents Permittivity (Dielectric)

${\epsilon }_0$ symbol represents Permittivity (Vacuum)

${\epsilon }_{\mathrm{r}}$ symbol represents Permittivity (Relative)

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