>magnetic property to the materials is due to current in electrical excitations
i.e magnetic property due to motion of electrons in the atoms.in one cm length of material billion times of atoms their.
THIS PHYSICS IS CALLED MATERIAL SCIENCES
and study of electron rotation in atom is by using QUANTUM PHYSICS
>AM SURE TO TELL THIS EVERY ENGINEER MUST NEED THIS PHYSICS
>because so many or most of applications based on magnetic property.
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