Further Experimental Proofs of the Existence of Single Magnetic Poles.

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from the Amr. Phy. Soc. Bulletin, 24-25 1949-50


Felix Ehrenhaft, University of Vienna.

The author stated in 1930, and repeatedly confirmed by experiments later on, the fact that particles carrying single magnetic poles do exist.* P. A. M. Dirac advanced the idea of magnetic poles from a quantum mechanical point of view in 1931 and completed this concept quite recently,** assuming that high energies are necessary for their separation. My experiments gave no evidence that high energies would be necessary for this purpose. E.g., J. A. Schedling*** repeated at my institute, by means of smallest magnetic field strengths, Oersted's experiment using iron particles suspended in gases, having six degrees of freedom. These particles circulate clockwise and counterclockwise simultaneously around the wire, through which a constant electric current is flowing, reversing the direction of movements with a reversal of the current. Therefore, the particles carry an excess of magnetic charge, north or south. The magnetic charges is measured amount to 10-8to to 10-10. m.st.u. Recently**** the author, R.F.K. Herzog, and co-workers found that radiation of RAE when exposed to the action of a longitudinal homogeneous magnetic field penetrates much thicker layers of aluminum than without a magnetic field. We are dealing in this case plausibly with particles of higher energies carrying single magnetic poles.

* Comptes Rendus, 190,263 (1930); Physik. Zeits. 31, 481 (1930); cf.Phys. Rev. 68, 105 (1945);70,114 (1946).J. Franklin Inst. 233,235 (1942); Comptes Rendus 225, 926(1947).
** Proc. Roy. Soc A133,60 (1931); Phys. Rev.74,817(1948).
***Comptes Rendus 227, 470 (1948).
**** Comptes REndus 626 (1948).

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