The role of magnetic coat

     There are many iron having two opposite poles of the original magnet, in the absence of a magnetic field, these original magnets disordered? Their magnetic cancel each other outside does not show magnetic properties. When the iron close to magnets, these magnets under the influence of the original magnet, neatly lined up, so near the end of the magnet has a magnetic polarity opposite to and attract each other. This indicates that the iron in the presence of the original magnet can be magnetized magnet. And copper, aluminum and other metals is not the original magnetic structure, it can not be attracted to a magnet.
    Mag magnetic coat hooks, simply put, inline magnetic filter is the role of the material in a non-uniform magnetic field will be magnetic. In the same non-uniform magnetic field, the unit mass of substances subject to the direction and strength of the magnetic force to determine the strength of the magnetic material. As any substance having magnetism, so any substance will be subject to the magnetic force in an inhomogeneous magnetic field.