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
Captain Atom (Atlas Publications) a visual reference to Captain Atom in the Watchmen comic book. In the origin story of Dr Manhattan (who is based on the Charlton Comics Captain Atom), the character is shown rejecting a helmet which is part of his US Government-supplied costume. The helmet design and the overall costume, although a different colour, somewhat resemble that of the Atlas Comics Captain Atom. The British artist, Dave Gibbons, may have been familiar with the Australian character. Captain Atom (Atlas Publications) Captain Atom was an Australian comic book series created and written by Jack Bellew with illustrations by Arthur Mather. It was