从宏观磁矩举例，如图6所示。在磁矩足够远的地方测量感生磁场，总磁场强度随距离成呈现三次方反比依赖关系，方向依赖性像一个两端高度与腰部直径之比约为2的花生形状。将磁场正交分解为沿磁矩的纵向分量和与磁矩垂直的横向分量，横向分量的正负转变角度在水平或竖直方 ...

NASA is closely monitoring an anomaly in Earth’s magnetic field located between South America and southwestern Africa.