Image:Magnetic-rope.gif

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[edit] Summary

The self-constricting magnetic field lines and current paths in a Birkeland current (or magnetic rope). The current is strongest at the axis and becomes weaker further away. Currents flow parallel to the magnetic field, and derives partly from an external axial field and partly from the toroidal field produced by the current itself.

Image credit: http://history.nasa.gov/SP-345/ch15.htm#250 (and arrows coloured by myself)

[edit] Licensing

This work is in the public domain in the United States because it is a work of the United States Federal Government under the terms of 17 U.S.C. § 105. See Copyright. Note: This only applies to works of the Federal Government and not to the work of any individual US state, territory, commonwealth, county, subdivision, or municipality.

File history

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• (del) (cur) 12:28, 2 October 2005 . . Iantresman (Talk | contribs) . . 560×800 (34,325 bytes) (The magnetic field lines and current paths in a Birkeland current (or magnetic rope). The current is strongest at the axis and becomes weaker further away. Currents flow parallel to the magnetic field, and derives partly from an external axial field and p)

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