Atom center of mass, although strictly speaking these particles are believed to be point-like and cannot be said to be rotating. Spin is measured in units of the reduced Planck constant (ħ), with electrons, protons and neutrons all having spin ½ ħ, or "spin-½". In an atom, electrons in motion around the nucleus possess orbital angular momentum in addition to their spin, while the nucleus itself possesses angular momentum due to its nuclear spin. The magnetic field produced by an atom—its magnetic moment—is determined by these various forms of angular momentum, just as a rotating charged object classically produces a magnetic
Empire of the Atom is kept alive because one of the atom priests wants to conduct an experiment to see what will happen if the boy, unlike other mutant children, is given the full education of an atom priest. In his teens the mutant boy Clane helps his father win a war with Mars. He also continues his studies while his grandfather, who is Lord Leader, and his tutors protect him from the Machiavellian intrigues swirling around him, especially those of his grandmother Lydia. Reaching his majority, Clane turns his estate into a laboratory where he can test new inventions and machines that he