Neutron properties and interactions are described by nuclear physics. Neutrons are not elementary particles; each is composed of three quarks. A free neutron spontaneously decays …

Dec 28, 2025 · neutron, neutral subatomic particle that, in conjunction with protons, makes up the nucleus of every atom except ordinary hydrogen (whose nucleus has one proton and no …

Fast Facts The neutron was first discovered in 1932. All around us is a faint, natural “background” of free neutrons created by cosmic rays entering our atmosphere and by natural radioactivity …

Dec 4, 2022 · Specifically, a neutron contains one 'up' and two 'down' quarks. Particles made from three quarks are called baryons, and hence baryons contribute to all the baryonic 'visible' …

Jun 10, 2023 · Neutrons, subatomic particles found in every atom except hydrogen, are used in scientific research for nondestructive analysis of materials through a method called neutron …

Jul 23, 2025 · Neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. Neutrons and protons are together termed nucleons since they …

May 29, 2024 · A neutron is one of the three main particles that make up an atom, the other two being protons and electrons. Unlike protons and electrons, neutrons do not possess a charge; …