用互易法求磁偶极子的磁场

A Calculation for Magnetic Field of Magnetic Dipole by the Reciprocity Principle

确定磁偶极子的磁场由于要用到较繁琐的数学方法 ,因而一般只讨论其轴线上的磁场。本文用互易定理 ,给出一种确定磁偶极子空间任意点的磁场的方法。作为特例 ,解出磁偶极子中垂面远处的磁场。

In general, only the magnetic field on the axis is discussed, because the very tedious mathematical method is involvd in ascertaining the magnetic field of magnetic dipole. This article gives a description of a method to ascertain the magnetic field at any arbitrary point of magnetic dipole space by a kind of reciprocity principle. As an example, the article goves the solution to the magnetic field at the far end of a mid_perpendicular plane of magnetic dipole.