The quick brown fox jumps over the lazy dog
{∮lH⋅dl=∫sJ⋅ds+∫s∂D∂t∮lE⋅dl=−ddt∫sB⋅ds∮sB⋅ds=0∮sD⋅ds=∫sρdv\left \{\begin{matrix} \begin{align} &\oint_{l} H \cdot dl=\int_{s}J\cdot ds+ \int_{s} \frac {\partial D} {\partial t} \\ &\oint_{l} E \cdot dl=-\frac {d}{dt}\int_{s}B\cdot ds \\ &\oint_{s}B\cdot ds=0 \\ &\oint_{s}D\cdot ds=\int_{s}\rho dv \end{align} \end{matrix} \right. ⎩⎨⎧∮lH⋅dl=∫sJ⋅ds+∫s∂t∂D∮lE⋅dl=−dtd∫sB⋅ds∮sB⋅ds=0∮sD⋅ds=∫sρdv
{▽×H=J+∂D∂t▽×E=−dBdt▽⋅B=0▽⋅D=ρ\left \{\begin{matrix} \begin{align} &\bigtriangledown \times H =J+\frac {\partial D} {\partial t} \\ &\bigtriangledown \times E =-\frac {dB}{dt} \\ &\bigtriangledown \cdot B=0 \\ &\bigtriangledown \cdot D=\rho \end{align} \end{matrix} \right. ⎩⎨⎧▽×H=J+∂t∂D▽×E=−dtdB▽⋅B=0▽⋅D=ρ
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