Meteorologische Zeitschrift (May 1997)
On Hide’s magnetic analogue of Ertel's vorticity theorem
Abstract
The relativistic formulation of Hide's "magnetic analogue" of Ertel's potential vorticity theorem is Dirac's "new classical theory of electrons". Dirac's "new theory" implies a supraconducting relativistic medium for which the vorticity wµv is proportional to the Maxwellian field strength Fµv. By these Ertel's circulation theorem becomes to a theorem of the electromagnetic field Fµv.
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