Rosa ‘Flora Danica’
Since the divergence of a vectorfield provides us with the number of field lines radiating outward from the source of the vectorfield it can be intuitively understood that the volume integral of the divergenbde of F equals the surface integral of F over the closed surface A:
∫ ∇⋅F dv = ∫F⋅dS
Another important theorem in vaectoranalysis is Stokes Theorem
∫∇×F ds = ∫F⋅dl
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