Image:Magnetic rope.png

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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 file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).

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Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3]

[edit] Automatically converted to PNG

The PNG crusade bot automatically converted this image to the more efficient PNG format. The image was previously uploaded as "Magnetic-rope.gif".

[edit] Previous file history

12:28:07, 2 October 2005 . . Iantresman (Talk | Contribs) . . 560x800 (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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(del) (cur) 04:39, 15 February 2007 . . PNG crusade bot (Talk | contribs) . . 560×800 (28,436 bytes) (__NOTOC__ == 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)