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The magnetic magnetic holder of common sense:
1. The magnetic field: the role of space to produce magnetic poles of the magnetic field.
2. The magnetic field strength: Size field (H) generated by coil energization, the number of turns per unit length of the spiral is n is the size of the flow through the magnetic field coil current I (A) generated by .H = n * I
3. The magnetic flux density B: vacuum permeability μ and the magnetic field strength is multiplied by B = μ * H
4. flux ∮: a certain area of the magnetic flux density .∮ adopted = B * S (S for unit area)
5. The maximum energy product BH (max): refers to the minimum volume of the strongest magnetic field obtained.
6. The coercive force H: refers to the magnetized state, is achieved by applying a reverse magnetic field strength required for the magnetization reversal if the magnetization reversal by movement of the magnetic domain wall is carried out prejudice movement of the magnetic domain walls. the force is the coercivity.
7. remanence B: saturation magnetic body from the field (including self-demagnetization field) decreases monotonically along the saturated hysteresis loop to zero magnetic induction (flux density)
8. surface magnetic field: the magnetic induction of the permanent magnet surface to a specified location.
9. Magnetic anisotropy: in different crystallographic direction, the presence of the easy magnetization direction and it is completely hard-magnetizing direction is determined by the nature of the substance itself.

2. The main magnetic unit volume and associated physical table:
Physical names and symbols: SI units conversion between CGS Gaussian system
Symbol and Name
Magnetic potential V A 1A = Gillbert Gillbert
Reluctance R 1A / wb = 1emu
Magnetic field strength H 1A / M = Oe
The magnetic flux density B T 1T = GSC
Magnetization M
Magnetic flux
* esu Electrostatic units units units units * emu electromagnetic

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