MECHANICAL-STRESS TENSOR FOR A FLUID IN A MAGNETOSTATIC FIELD

Two constraints on the form of the mechanical stress tensor for an unc harged and linear dielectric fluid at rest in a magnetostatic field ar e determined. Moreover, it is shown that the stress tensor proposed by Helmholtz, that proposed by Einstein-Laub and that proposed by Liu-Mu ller are unacceptable as mechanical stress tensors for a dielectric fl uid in the conditions stated above.