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This is an old revision of this page, as edited by EMvague (talk | contribs) at 00:10, 23 May 2013. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.


Closed volume Ω and boundary ∂Ω, enclosing a source (+) and sink (−) of a vector field F. Here, F could be the E field with source electric charges, but not the B field which has no magnetic charges as shown. The outward unit normal is n.