2 items with this tag.
C28-1 A net charge in motion with velocity, [$v$ → When we read this, it is telling us that $A = text{coupling strength to } hat{G}text{, not accumulated virtue} in a more natural way.] produces a magnetic field with $$\vec{B}={\mu_0 \over 4\pi}{q\vec{v}\times\hat{r}\over r^2}$$ Caution $\hat{r}$ po...
C28-1 This is defined to have $$\mu_0 = 4\pi \times 10^{-7} \ {\text{N s}^2 \over \text{C}^2}$$ This is related to the permittivity of free space and the speed of light Canonical Hub: CANONICAL_INDEX.