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The rotation in a point of the field V is a differential operator that indicates the extent to which the direction of the field changes



The rotation is a function of a three-dimensional vector field. If we take the field as a flow, then the rotation in each point indicates how fast and around which axis a flowing particle would rotate.


Example 1

The Maxwell equation of the electric current density is


    ∇× Rotation
    H Magnetic field strength
    D Electric displacement
    t Time
    J Electric current density


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