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where ε₀ is the [[electric constant]], ρ('''r''') is a charge distribution, and '''∇'''· stands for

...ε₀ '''''E''''',}} where ε₀ is the [[electric constant]]. The relative permittivity describes the ease by which a dielectric mediu where ε₀ is the [[electric constant]]. In [[Gaussian units]] one may take ε₀ = 1. When the

(see [[electric constant]] for the SI value of ε₀).

...rge then the integral is zero. The constant ε₀ is the [[electric constant]].

...ar [[polarizability]] of one molecule, and &epsilon;₀ is the [[electric constant]] (permittivity of the vacuum). In this expression for ''P''<sub>''M''</sub

The Gaussian system does not know about the [[electric constant]] &epsilon;₀ or the [[magnetic constant]] &mu;₀, whic

The quantities &epsilon;₀ and &epsilon;_''r'' are the [[electric constant]] (also known as vacuum permittivity) and the static [[relative permittivit

where &epsilon;₀ is the [[electric constant]] (permittivity of the vacuum) and ''N'' is the number density (number of a ...the dielectric and inside this cavity there is vacuum with permittivity ([[electric constant]]) &epsilon;₀. The cavity is so small that the polarization vec

...duct]] between '''&mu;''' and '''R''', and &epsilon;₀ is the [[electric constant]] (vacuum permittivity).

where &epsilon;₀ is the [[electric constant]] and &epsilon;_r is the [[relative permittivity]] of the dielect

...particle on its trajectory. The symbol ''&epsilon;₀'' is the [[electric constant]] of the [[SI units]]. Notice that at time <math>\tilde t</math>, unit vect

...]], ''e'' is the [[elementary charge]], ''&epsilon;₀'' is the [[electric constant]], ℏ is the reduced [[Planck's constant]] ''h/(2&pi;)'', ''m_e' ...eed of light]] in [[classical vacuum]], ''&epsilon;₀'' is the [[electric constant]], ''&alpha;'' = [[fine structure constant]] and ''&mu;_B'' is th

...tron, ''Ze'' is the charge of the nucleus, &epsilon;₀ is the [[electric constant]], and <math>\hbar=h/2\pi</math> is [[Planck constant|Planck's reduced cons

...t charge distributions &rho; are zero. The quantity ε₀ is the [[electric constant]]. Hence, also the electric field '''E''' is transverse.

...that encompasses all of &rho;('''r''') and &epsilon;₀ is the [[electric constant]] (formerly known as the permittivity of the vacuum).

...IST1">{{cite web |url=http://physics.nist.gov/cgi-bin/cuu/Value?ep0 |title=Electric constant |accessdate=2010-11-28 |author=[[CODATA]] |work=2006 CODATA recommended val

...m/s), 4&pi;&epsilon;₀ = 10⁷/''c''² (see [[electric constant]]) and the suffix on the symbol &alpha; indicates the unit in which the po

The [[electric constant]] &epsilon;₀ and the [[magnetic constant]] &mu;₀ are

where &epsilon;₀ is the [[electric constant]] and the cross indicates a [[cross product]].

where &epsilon;₀ is the [[electric constant]] and &mu;₀ the [[magnetic constant]]. Define also