Category:Definitions/Vacuum Permittivity
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This category contains definitions related to Vacuum Permittivity.
Related results can be found in Category:Vacuum Permittivity.
The vacuum permittivity is the physical constant denoted $\varepsilon_0$ defined as:
- $\varepsilon_0 := \dfrac {e^2} {2 \alpha h c}$
where:
- $e$ is the elementary charge
- $\alpha$ is the fine-structure constant
- $h$ is Planck's constant
- $c$ is the speed of light defined in $\mathrm m \, \mathrm s^{-1}$
Of the above, only the fine-structure constant $\alpha$ is a measured value; the others are defined.
It can be defined as the capability of an electric field to permeate a vacuum.
From Value of Vacuum Permittivity, $\varepsilon_0$ has the value:
Pages in category "Definitions/Vacuum Permittivity"
The following 3 pages are in this category, out of 3 total.