Electronics: Difference between revisions
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* ∇ ⨯ <b>E</b> = -∂<b>B</b> / ∂t. | * ∇ ⨯ <b>E</b> = -∂<b>B</b> / ∂t. | ||
* ∇ ⨯ <b>B</b> = μ<sub>0</sub>(<b>J</b> + ε<sub>0</sub>∂<b>E</b> / ∂t). | * ∇ ⨯ <b>B</b> = μ<sub>0</sub>(<b>J</b> + ε<sub>0</sub>∂<b>E</b> / ∂t). | ||
* For a manifestly Lorentz-covariant theory, one must use [https://en.wikipedia.org/wiki/Four-current four currents] and the [https://en.wikipedia.org/wiki/Electromagnetic_tensor electromagnetic tensor] or [https://en.wikipedia.org/wiki/Electromagnetic_four-potential four-potential]. | * For a manifestly Lorentz-covariant theory, one must use [https://en.wikipedia.org/wiki/Four-current four currents] and the [https://en.wikipedia.org/wiki/Electromagnetic_tensor electromagnetic tensor] or [https://en.wikipedia.org/wiki/Electromagnetic_four-potential four-potential]. | ||
** This formulation makes plain the mixing of <b>E</b> and <b>B</b>. | ** This formulation makes plain the mixing of <b>E</b> and <b>B</b>. | ||