how to block the magnetic field lines

how to block the magnetic field lines
Hypothesis based on molecular circulation, constitute the essence of the phenomenon of magnetic substance caused ordered microscopic particles of an electrical phenomenon of substances into the magnetic field, the microstructure changes its ordering, a phenomenon known as magnetized. the magnetic field lines of the magnetic field surrounding material is magnetized after an image representation. said before, the magnetic field is formed by microscopic particles ordered, this hopper magnet arrangement is damaged, the magnetic field will disappear, magnetic, magnetic field lines will disappear naturally. apparently This is not the landlord the answers you need.
Landlord should also remember that the electric field shielding phenomena and principles, and the electromagnetic field argument is also not unfamiliar. Indeed, electricity and magnetism are essentially the same thing. Closed conductor can shield the electric field, it can shield the magnetic field, at least in principle such a course easy magnetization of iron is not enough