So far as we know, the idea of a quantised spinning of the electron was put forward for the first time by A. K. Compton (Journ. Frankl. Inst., Aug. 1921, p. 145), who pointed out the possible ...

For the same reason, a technician or a doctor operating a magnetic resonance imaging (MRI) machine at the hospital never needed to understand quantum mechanics—the spinning of the protons inside ...