The stress-energy tensor in electromagnetic theory and a new law of force

Modified Electromagnetic Theory.—By suitably modifying the equations for the components of the stress-energy tensor it is possible to reconcile electromagnetic theory with the idea of non-radiating electronic orbits. The change, however, is equivalent to assuming that an element of electricity is acted upon by a new force which depends on the gradient of the density of electricity and balances the usual electromagnetic force. By assuming a certain distribution of density within an electron it is also possible to account for the existence of discrete electronic charges.