Until about ten minutes ago I had never heard of the magnetic vector potential [tex] \vec A [/tex], defined such that(adsbygoogle = window.adsbygoogle || []).push({});

[tex] \vec B = \nabla \times \vec A [/tex].

I am having trouble visualizing this. What would the magnetic vector potential field look like around a straight wire carrying a (constant) electric current?

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# Magnetic potential

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