Magnetic Field Geometry

磁场几何

Magnetic field lines are very different from electric field lines because magnetic sources are inherently dipole sources with North and South magnetic poles. The magnetic field lines form closed loops and any closed surface will have a net zero number of lines leaving the surface.

磁场线与电场线有很大不同，因为磁源本质上是偶极源，具有北磁极和南磁极。磁场线形成闭合回路，任何闭合曲面的净磁通量均为零。

Bar Magnet 磁体	Bar Magnet vs Point Charge 磁体与点电荷
Bar Magnet vs Solenoid 永磁体与螺线管	Electromagnet 电磁体
Earth's Magnetic Field 地球磁场	Helmholtz Coils 海姆霍尔茨线圈
Magnetic Fields of Currents 电流的磁场

Index

Magnetic field concepts

磁感应强度概念

HyperPhysics***** Electricity and Magnetism

HyperPhysics ***** 电学和磁学

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