Magnetic monopoles redux

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Abstract

In connection with the most interesting note by J. C. Cain (Eos, September 22, 1981) on the possibility that g00 does not vanish, it is worth remembering that the suggestion of searching for a nonzero value goes back to Gauss, considerably before Vestine (and Dirac!). In his Allgemeine Theorie des Erdmagnetismus (1839), Gauss wrote:

The question remains whether or not a detectable surplus of one or other kind of ‘fluid’ (i.e., magnetic pole) exists in an isolated magnetic body…

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