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[en] The integrals of the Heisenberg's motion equations of the zero-mass charge in electron are obtained by Dirac's method and analyzed. The charge is circulating along a circle with radius R = λ0(1 + α/π), and vφ = c = const. It is shown that spin sz=h/2 and at the same time the full vector magnetic flow through the current circular contour directed opposite to spin |Φz| = Φ0 = πℎc/e are quantized. The physical cause of the electron's magnetomechanical ratio - e/mc(1 + α/π) doubling in comparison with the orbital one - e/2mc is found. The doubling is caused by the fact that about half the electron's mass, which is formed by the self stationary magnetic and electrostatic field, is not participating in spin generation
[en] In quantum electrodynamics, the quantitatively most successful theory in the history of science, intercharge forces obeying the inverse square law are due to the exchange of space-like virtual photons. The fundamental quantum process underlying applications as diverse as the gyromagnetic ratio of the electron and electrical machinery is then Møller scattering ee → ee. Analysis of the quantum amplitude for this process shows that the corresponding intercharge force acts instantaneously. This prediction has been verified in a recent experiment.
[en] A new experiments is being developed at Brookhaven National Laboratory to measure the g-2 value of the muon to a precision of 0. 35 ppM, which would improve our present knowledge by a factor of 20. The current scientific motivations, the principle and the status of the experiment are discussed briefly