# Vector Field Flow through and around a Circle

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The vector flow across a circle depends on the divergence of the given field: it is always zero when there are no sinks, sources, or singularities. Similarly, the vector flow around the circle depends on rotation (or curl). Here the circle is taken as parametrized in the counterclockwise sense.

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Contributed by: Gosia Konwerska (March 2011)

Open content licensed under CC BY-NC-SA

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