# Relative permittivity/Related Articles

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*See also changes related to Relative permittivity, or pages that link to Relative permittivity or to this page or whose text contains "Relative permittivity".*

## Parent topics

- Physics [r]: The study of forces and energies in space and time.
^{[e]} - Electrostatics [r]:
*Add brief definition or description* - Dielectric [r]: an insulating, but polarizable, material that can be solid, liquid or gas; its important characterizing property is the relative permittivity (aka dielectric constant).
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## Subtopics

- Maxwell equations [r]: Mathematical equations describing the interrelationship between electric and magnetic fields; dependence of the fields on electric charge- and current- densities.
^{[e]} - Dielectrophoresis [r]:
*Add brief definition or description* - Electrorotation [r]: The rotation of dielectric particles induced by application of rotating electric fields.
^{[e]} - Relative permeability [r]: A factor describing magnetizability as a proportionality between magnetic flux density and magnetic field in a magnetic material or medium.
^{[e]} - Vacuum (partial) [r]: A realizable vacuum with a gaseous pressure that is much less than atmospheric.
^{[e]} - Vacuum (classical) [r]: The term
*classical vacuum*as used in classical electromagnetism and in the definition of the SI units refers to an ideal reference medium devoid of all particles, with ideal properties. These ideal properties include: independence from field strengths, direction, frequency, or polarization, and from temperature.^{[e]} - Vacuum (quantum electrodynamic) [r]: The term
*quantum electrodynamic vacuum*, or QED vacuum, refers to the ground state of the electromagnetic field, which is subject to fluctuations about a dormant zero average-field condition.^{[e]}