β Scribed by Alfred Actor
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π SIMILAR VOLUMES
We analyse some redefinitions of the energy-momentum tensor of Classical Electrodynamics. Usually it has been considered as a necessary and sufficient criterion for redefining the energy-momentum tensor that the new tensor yields the "true" equation of motion of the electron, that is, the Lorentz-Di
We consider the standard nonrelativistic theory of a continuous, elastic medium with fmite deformations, according to which the elastic energy is a function only of the state of strain, and the elastic stress tensor is proportional to the strain gradient of the elastic energy in appropriate coordina
The gyroscopic invariance implies the representation of the antisymmetric part of the Hermite-symmetric metric by a vector potential. Therefore we introduce the six functions of this antisymmetric part in general as derived by two vector potentials. Then Einstein's variational principle leads to a s