# Electric constant/Related Articles

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## Parent topics

## Subtopics

- Vacuum (science) [r]: A realizable vacuum with a gaseous pressure that is much less than atmospheric.
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## Bot-suggested topics

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- Born-Oppenheimer approximation [r]: A technique in quantum mechanics in which the kinetic energies of nuclei and electrons are calculated separately.
^{[e]} - Clausius-Mossotti relation [r]: connects the relative permittivity ε
_{r}of a dielectric to the polarizability α of the atoms or molecules constituting the dielectric.^{[e]} - Coulomb's law [r]: An inverse-square distance law, like Newton's gravitational law, describing the forces acting between electric point charges; also valid for the force between magnetic poles.
^{[e]} - Electric displacement [r]: a vector field
**D**in a dielectric;**D**is proportional to the outer electric field**E**.^{[e]} - Electric field [r]: force acting on an electric charge—a vector field.
^{[e]} - Electricity [r]: The flow or presence of electric charge; the flow of electricity is an important carrier of energy.
^{[e]} - Electromagnetic wave [r]: A change, periodic in space and time, of an electric field
**E**(**r**,t) and a magnetic field**B**(**r**,t); a stream of electromagnetic waves, referred to as electromagnetic radiation, can be seen as a stream of massless elementary particles, named photons.^{[e]} - Farad [r]: SI unit of capacitance; symbol F: 1 F = 1 C/V
^{[e]} - Gauss' law (electrostatics) [r]: Relates the surface integral of the electric displacement through a closed surface to the electric charge enveloped by the closed surface.
^{[e]} - Gauss' law (magnetism) [r]: States that the total magnetic flux through a closed surface is zero; this means that magnetic monopoles do not exist.
^{[e]} - Gaussian units [r]: A centimeter-gram-second system of units often used in electrodynamics and special relativity.
^{[e]} - Green's function [r]: Auxiliary function in the theory of linear differential equations; integral operator with Green function as kernel is the inverse of a linear differential operator.
^{[e]} - Lorentz-Lorenz relation [r]: An equation describing the relation between the density and index of refraction of a dielectric.
^{[e]} - Magnetic constant [r]: A physical constant in the International System of Units (SI) relating mechanical force and electric current in classical vacuum with a defined value
*μ*= 4_{0}*π*× 10^{−7}N/A^{2}.^{[e]} - Maxwell equations [r]: Mathematical equations describing the interrelationship between electric and magnetic fields; dependence of the fields on electric charge- and current- densities.
^{[e]} - Momentum [r]: mass of a particle times its velocity (a vector).
^{[e]} - Polarizability [r]: The ease by which a charge-distribution polarizes; describes the amount of charge separation caused by an electric field.
^{[e]} - Relative permittivity [r]: A factor describing the polarizability of a material or medium as a proportionality between an electric displacement and an electric field in a dielectric.
^{[e]} - Speed of light [r]: A physical constant
*c*describing the speed of electromagnetic radiation in vacuum. In the International System of Units the metre is the distance light travels in classical vacuum in 1/*c*seconds, using the defined value*c = c*≡ 299 792 458 m/s (exact)._{0}^{[e]} - Statcoulomb [r]: Unit of electric charge in cgs-esu units: 1 statC = C/(10⋅
*c*), with*c*the speed of light in m/s.^{[e]}