Analytic Expression for the Magnetic Leakage Field Inside and Outside of a Slot on the Cylindrical Surface of a Disc

摘要

According to author's new theory of magnetic dipole an analytic expression for magnetic leakage field inside and outside of a slot on cylindrical surface of a disc, at circumferential magnetization, has been derived. Their digital magnitudes at symmetrical axis of the slot, have been calculated plotted through this expression and lienar magnetic charge denstiy alogn the edges of a slot, gained by author's former calculation. These theoretial characteristic curves very well conform to the experimetnal results, which ahs been ever known of 23 years at least, but any theoretical explanation about this classical experiment has never been seen since then.