Formula: Electric Field in Matter Electric field (E field)    Polarization    Vacuum Permittivity

Electric field in matter

Unit
The average electric field within the dielectric (non-conductive but polarizable) material.

Electric field (E field)

Unit
External electric field in which the dielectric material is situated.

Polarization

Unit
Polarization describes the density of electric dipoles in a material (number per volume) and induces a polarization field $$\class{purple}{E_{\text{p}}}$$, which can be aligned either opposite or in the same direction as the external electric field, thereby amplifying or weakening the external electric field.

Vacuum Permittivity

Unit
The vacuum permittivity is a physical constant that appears in equations involving electromagnetic fields. It has the following experimentally determined value: $$\varepsilon_0 ~\approx~ 8.854 \, 187 \, 8128 ~\cdot~ 10^{-12} \, \frac{\mathrm{As}}{\mathrm{Vm}}$$

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