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Kristian Birkeland predicted auroral electrojets in 1908. He wrote: "[p.95 ..] the currents there are imagined as having come into existence mainly as a secondary effect of the electric corpuscles from the sun drawn in out of space, and thus far come under the second of the possibilities mentioned above. [p.105 ..] Fig. 50a represents those in which the current-directions at the storm-centre are directed westwards, and 50b those in which the currents move eastwards."

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Scanned by Ian Tresman from The Norwegian Aurora Polaris Expedition 1902-1903 (publ. 1908).

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(del) (cur) 22:06, 5 September 2005 . . Iantresman (Talk | contribs) . . 878×632 (54,613 bytes) (Kristian Birkeland predicted auroral electrojets in 1908. He wrote: "[p.95 ..] the currents there are imagined as having come into existence mainly as a secondary effect of the electric corpuscles from the sun drawn in out of space, and thus far come unde)