(1) Electrons are in unity both magnetic dipoles and electric elementary charges. ↑ ↑
(2) The cause of the splitting of spectral lines in an external magnetic field is the magnetic polarisation of the electron pairs in the atom. ↑ ↑
(3) Spin is an intrinsic (invariable) property of the electron. ↑ ↑
(4) Since both the splitting of the spectral lines and the Lorentz force always occur in connection with magnetic fields, the spin must always be considered as a magnetic dipole of the electron. ****↑ ↑ ****See also the presumtions about atomic structure.