Template:Editnotices/Page/Mathematical descriptions of the electromagnetic field
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| Please note: the current J is defined as a three(!) form here. Please do not change the formula below to *d*F = J (LHS 1 form, RHS 3 form). In much of the literature J is defined as a 1-form (hodge star of our J) but the three-form version is much nicer (e.g., J is closed rather than co-closed) and much closer to physical intuition (e.g., for a spacelike 3-dimensional region V, \int_V J = charge in V) |