ISSN:
1476-4687
Quelle:
Nature Archives 1869 - 2009
Thema:
Biologie
,
Chemie und Pharmazie
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Notizen:
[Auszug] MORE than seventy years ago, Balfour Stewart1, and later Schuster2, realized that the small regular daily oscillations of the compass needle were probably produced by electric currents in the upper atmosphere. The latter put forward a detailed quantitative theory, the 'dynamo theory', which ...
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1038/1701090a0
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