Sähkökenttävakio
Sähkökenttävakio, often translated as permittivity of free space, is a fundamental physical constant denoted by the symbol $\epsilon_0$. It quantifies the capability of a vacuum to permit electric fields. In simpler terms, it describes how easily an electric field can be established in a vacuum.
The value of $\epsilon_0$ is approximately $8.854 \times 10^{-12}$ farads per meter (F/m). This constant appears in
The permittivity of free space is also related to the permeability of free space ($\mu_0$) and the
In materials other than a vacuum, the permittivity is described by the relative permittivity (also known as