magnetismu
Magnetism refers to a class of physical phenomena associated with magnetic fields and the forces they exert on matter. Magnetic effects arise mainly from moving electric charges and from intrinsic magnetic moments of elementary particles, notably electrons. In classical terms, magnetic fields are described by the vector field B and the related quantities H and M, with magnetization M describing how a material responds to the field. The field can exert torques on magnetic dipoles and produce attractive or repulsive interactions between magnets and magnetic materials. Maxwell’s equations govern the behavior of magnetic fields and their coupling to electricity.
There are several distinct kinds of magnetism. Ferromagnetism features a strong, spontaneous alignment of magnetic moments,
Earth’s magnetism is a geophysical phenomenon generated by convecting liquid iron in the outer core, producing