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File:Magnetic rope.png

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English: 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. Current flows 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)

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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  • 2005-10-02 12:28:07 . . 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)
The original description page was here. All following user names refer to en.wikipedia.
  • 2007-02-15 04:39 PNG crusade bot 560×800× (28436 bytes) __NOTOC__ 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

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current10:56, 5 November 2009Thumbnail for version as of 10:56, 5 November 2009560 × 800 (28 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|__NOTOC__ The self-constricting magnetic field lines and current paths in a Birkeland current (or magn

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