The basic nature of a magnet, called magnetism, is the existence of a magnetic field that has two poles (and possibly magnetic monopoles). According to Lorentz's theorem, all the magnetic fields are phenomena of the electromagnetic field or the result of the electron movement. In other words, there is no magnetic field without current or electronic motion. Magnetic field between the same polarity opposite repulsion. In addition, the magnetic field also works with all charged or moving charges (in a nutshell, current). The most common of these are generally the following: magnet attraction of ferromagnetic; generator and motor; kinescope deflection coil and so on. Without exception, these effects are the interaction between the electromagnetic field and the moving charge (current).

The basic nature of the magnet

1, the nature of the magnet: Magnet magnet, you can attract iron items.

2, the magnet has a pole, each magnet has two poles of N pole and S pole, is in pairs.

3, temporary magnets and permanent magnets: When the ferromagnetic material is magnetized, easy to lose the nature of the magnetic, called the temporary magnet (for example: iron); when the ferromagnetic material is magnetized, not easy to lose magnetic The nature of the permanent magnet (for example: steel).

4, when two magnets close to each other, the same poles will be mutually exclusive to push away, different poles will attract each other to stick. So: the same repulsion, heterosexual attract.