Calculate the relative strength of the interaction between two typical magnetic dipoles, compared with the interaction between two typical electric dipoles. To be explicit, calculate the torque exerted on one dipole by the other when they are oriented perpendicularly to each other at a distance of one angstrom unit; take each magnetic dipole = 1 Bohr magneton, each electric dipole = e X 0.1 angstrom. This calculation shows that the basic magnetic interaction is several orders of magnitude smaller than the electrical interaction in the matter.