Flux surface: Difference between revisions

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:<math>\vec B \cdot \vec n = 0</math>
:<math>\vec B \cdot \vec n = 0</math>


everywhere on ''S''. It is then possible to define a scalar ''flux function'' (''f'') such that its value is constant on the surface ''S'', and
everywhere on ''S''.  
In other words, the magnetic field does not ''cross'' the surface S anywhere, and the magnetic flux traversing ''S'' is zero.
It is then possible to define a scalar ''flux function'' (''f'') such that its value is constant on the surface ''S'', and


:<math>\vec B \cdot \vec \nabla f = 0</math>
:<math>\vec B \cdot \vec \nabla f = 0</math>