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proton
(Encyclopedia)proton, elementary particle having a single positive electrical charge and constituting the nucleus of the ordinary hydrogen atom. The positive charge of the nucleus of any atom is due to its protons....proton-proton cycle
(Encyclopedia)proton-proton cycle: see nucleosynthesis. ...nucleon
(Encyclopedia)nucleon, term applying to both the proton and the neutron, the two constituents of atomic nuclei. The nucleon may be considered a single particle, of which the proton and the neutron are two different...protonation
(Encyclopedia)protonation prōˈtənāˌshən [key], in chemistry, addition of a proton to an atom, molecule, or ion. The proton is the nucleus of the hydrogen atom; the positive hydrogen ion, H+, consists of a sin...nucleosynthesis
(Encyclopedia)nucleosynthesis or nucleogenesis, in astronomy, production of all the chemical elements from the simplest element, hydrogen, by thermonuclear reactions within stars, supernovas, and in the big bang at...neutron
(Encyclopedia)neutron, uncharged elementary particle of slightly greater mass than the proton. It was discovered by James Chadwick in 1932. The stable isotopes of all elements except hydrogen and helium contain a n...hyperon
(Encyclopedia)hyperon hīˈpərŏnˌ [key], class of elementary particles heavier than nucleons (proton and neutron). The nucleons and the hyperons together make up the baryon family of particles. ...acids and bases
(Encyclopedia)acids and bases, two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Another theory that provides a very broad ...Chamberlain, Owen
(Encyclopedia)Chamberlain, Owen, 1920–2006, American physicist, b. San Francisco, Calif., Ph.D. Univ. of Chicago, 1948. He was on the faculty at the Univ. of California, Berkeley, from 1949 until his retirement i...Segrè, Emilio
(Encyclopedia)Segrè, Emilio, 1905–89, Italian-American physicist, Ph.D. Univ. of Rome, 1928. Segrè was a professor at the Univ. of Rome (1932–36), a researcher at the Univ. of California, Berkeley (1936–43)...Browse by Subject
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