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
The ATOM Project The ATOM Project The ATOM Project (est. August 2012) is an international campaign by the Nazarbayev Center of Kazakhstan. The primary goal of the campaign is to build international support for the abolishment of nuclear testing. ATOM stands for "Abolish Testing. Our Mission." The goal is to achieve in force the Comprehensive Nuclear Test Ban Treaty through online petitions and other methods. The campaign is an initiative of the Nazarbayev Center whose mission includes the "promotion of nuclear responsibility, nuclear disarmament, and nuclear nonproliferation according to the vision of President Nursultan Nazarbayev (Kazakhstan)." Kazakhstan has historically been concerned about nuclear