Magnetic curvature: Difference between revisions

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== Normal curvature ==
== Normal curvature ==


:<math>\kappa_N = \kappa \cdot \frac{\vec \nabla \psi}{|\vec \nabla \psi|}</math>
:<math>\kappa_N = \vec \kappa \cdot \frac{\vec \nabla \psi}{|\vec \nabla \psi|}</math>


Here, &psi; is a [[Flux surface|flux surface]] label (such as the poloidal flux).
Here, &psi; is a [[Flux surface|flux surface]] label (such as the poloidal flux).
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== Geodesic curvature ==
== Geodesic curvature ==


:<math>\kappa_G = \kappa \cdot \left (\frac{\vec \nabla \psi}{|\vec \nabla \psi|} \times \frac{\vec B}{|\vec B|}\right )</math>
:<math>\kappa_G = \vec \kappa \cdot \left (\frac{\vec \nabla \psi}{|\vec \nabla \psi|} \times \frac{\vec B}{|\vec B|}\right )</math>


== References ==
== References ==
<references />
<references />

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