Abstract
IT is true that Cowling's impossibility theorem would apply to a finite and unencumbered disk. To achieve a non-zero solution, it is essential that a finite disk be encumbered to the extent of an input coil, or a magnetic feedback path as proposed in Fig. 2 of my communication. If such configurations of the magnetic field with more than one interlinkage of the electric circuit were admissible in the astronomical context, the difficulties of dynamo maintenance would be reduced.
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MIDGLEY, D. Impossible Magnetic-Field Self-Patterning. Nature 188, 651 (1960). https://doi.org/10.1038/188651b0
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DOI: https://doi.org/10.1038/188651b0
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