Effect of Magnetic Dipole Moment on Magnet Forces

This paper discusses the effect of magnetic dipole moment on the ``lifting power'' of permanent magnets and on forces between magnets. To within the precision of observations, stacking identical magnets end-to-end appears to increase the dipole moment of a magnet in direct proportion to the material length of the magnet. This convenience facilitates a wide range of experiments that can be performed with magnets to study their fields and forces.