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Conversion Energie Mondiale

÷dlvf=dlvf=pdiffdlvfc 1x+pdiffdlvfc 2y+pdiffdlvfc 3z\div \dlvf = \nabla \cdot \dlvf = \pdiff{\dlvfc_1}{x} + \pdiff{\dlvfc_2}{y} + \pdiff{\dlvfc_3}{z} div ⁡<!-- ⁡ --> F = ∇<!-- ∇ --> ⋅<!-- ⋅ --> F = ∂<!-- ∂ --> F 1 ∂<!-- ∂ --> x + ∂<!-- ∂ --> F 2 ∂<!-- ∂ --> y + ∂<!-- ∂ --> F 3 ∂<!-- ∂ --> z .

(1)×E=Bt\nabla \times \vec{E} = - \frac {\partial \vec{B}}{\partial t}