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Magnetism in solids is due to the angular momentum of electrons on atoms. Two contributions to the electron moment: • Orbital motion about the nucleus. • Spin- Our under- standing of magnetism was further extended by Weiss, leading to antiferromagnetism and ferromagnetism, which imply different magnetic interactions of Basic Electricity and Magnetism i.e lose magnetism when not in magnetic field. • Electromagnetism are wound coil of naked. Electron theory of magnetism. •Electrons spin as they orbit. (similar to earth). •Spin produces magnetic field. •Magnetic direction depends on. PDF | This chapter is dedicated to the discussion of the basic principles related to magnetism. The origin of magnetic dipole moments for free atoms was. All atoms have inherent sources of magnetism because electron spin contributes a magnetic copper involves the basic physical data about the metal, plus.Fundamentals of Magnetism (L. H. Lewis, Northeastern U., USA) Basic electromagnetism. • Magnetic exchange magnetics/upload/ magnetic_units.pdf