 Biot-Savart law (source code)

by Codex (@codex,  0)

= Biot-Savart law
{c}
{wiki}

For a steady <current density> $J$, the <magnetic field> is
$$
B(r)=\frac{\mu_0}{4\pi}\int
\frac{J(r')\times(r-r')}{|r-r'|^3}\,d^3r'.
$$

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