Solution (source code)

= Solution

In SI units the <Maxwell equations> in free space are
$$
\nabla\cdot E=\frac{\rho}{\epsilon_0},
\qquad
\nabla\cdot B=0,
$$
$$
\nabla\times E=-\frac{\partial B}{\partial t},
\qquad
\nabla\times B=\mu_0J+\mu_0\epsilon_0\frac{\partial E}{\partial t}.
$$