Value of Vacuum Permeability

Theorem
The value of the vacuum permeability is calculated as:


 * $\mu_0 = 1 \cdotp 25663 \, 70621 \, 2 (19) \times 10^{-6} \, \mathrm H \, \mathrm m^{-1}$ (henries per metre)

with a relative uncertainty of $1 \cdotp 5 \times 10^{-10}$.