The space around the magnetic force of the magnet is called a magnetic field action. The physical quantity indicating the strength of the magnetic field is called the magnetic field strength. It is usually represented by the symbol H, and the unit is Oersted.
The magnetic properties of the ore can be determined by the specific magnetic coefficient X. Said. Specific magnetic coefficient X. Indicates the amount of force per unit volume of material in a standard magnetic field. For example, the ferromagnetic mineral magnetite has a specific magnetic susceptibility X. = 80000 × 10 cm / gram; and weak magnetic hematite specific magnetic coefficient X. = 290 × 10 cm / g. The magnetic strength is different, and the specific magnetization coefficient is very different.
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