MG11 
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A LINK BETWEEN GENERAL RELATIVITY AND QUANTUM MECHANICS

For a number of reasons including a g-factor g = 2, the most probable external gravitational and electromagnetic field of the electron can be approximated by the Kerr-Newman solution to the Einstein-Maxwell equations. It is shown that the Kerr-Newman solution when applied to the electron gives rise to an uncertainty in the position of the particle. The size of the uncertainty is the Compton wavelength. This is precisely the uncertainty which is usually postulated for the electron. This can be taken as an indication that the uncertainty in the position of the electron is actually a consequence of the Einstein-Maxwell equations together with the quantized nature of the spin.

AN OPTICAL ANALOGUE FORMULATION OF THE KERR EQUATORIAL PLANE

An optical analogue solution of the Kerr equatorial plane is given. To find the solution a special notation for calculations with two different metrics has been used. The possibility of extending the solution to the complete Kerr geometry is also discussed.

SOME PHYSICAL ASPECTS OF THE KERR AND KERR-NEWMAN SOLUTIONS

We discuss physical aspects of the Kerr and Kerr-Newman solutions. Emphasis is given to the multipole structure, including its nonlinear nature in general relativity. It is argued that physical consequences of the general relativistic multipole structure are likely to be important for macroscopic as well as microscopic systems.