https://doi.org/10.1351/goldbook.P04508
Fundamental physical constant \(\varepsilon_{0}=\frac{1}{\mu _{0}\ c_{0}^{2}}\) exactly, where \(\mu_{0}\) is the @P04504@ and \(c_{0}\) the speed of light in vacuum. It is equal to \(8.854\ 187\ 817\,...\times\ 10^{-12}\ \text{F m}^{-1}\).