Hawkins, John

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One of Maxwell's Equations: ${\oint }_{\partial S}\text{E}\cdot \text{l}=-\frac{\partial {\mathrm{\Phi }}_{B,S}}{\partial t}$

Matrix: $\left[\begin{array}{ccc}1& 0& 0\\ 0& 1& 0\\ 0& 0& \frac{\partial }{\partial t}\end{array}\right]$

Cylindrical Coordinates:

$$\begin{gathered} \hat{\rho }=\cos \varphi \\ \hat{x}+\sin \varphi \\ \hat{y} \end{gathered}$$

$$\begin{gathered} \hat{\varphi }=-\sin \varphi \\ \hat{x}+\cos \varphi \\ \hat{y} \end{gathered}$$

$\hat{z}=\hat{z}$