baryon, meson, strange quark, antiparticle, nuclei, valence electrons, fermion, positrons, gluon, gravitons, valence electron, neutrino, positronium, quasiparticle, atoms, orbitals, muon, hadrons, dipole moment, nucleon, rho, antiquarks, nebular, ions, plasmon, dipolar, antiprotons, dimers, hydrogen atom, lepton, interstellar medium, solvation, phonon, quark, boson, exciton, anion, porphyrin, neutrons, nucleosynthesis, osmium, particle, magnetic flux, toroid, kev, icosahedral, radiative, charm quark, soliton, hydrogenase, cementite, chromophore, florescence, tetrahedron, jovian, uracil, planetary nebula, hydroxyl radical, photolysis, enthalpy, olivine, amide, adsorbate, ferromagnetism, carbonic, graviton, anisotropy, subatomic particle, sundog, electron, entropy, phenanthrene, peroxidase, magnetic dipole, cooh, supernovae, plagioclase, kelvin, plastids, supersolid, thiols, tetramer, prokaryote, stoichiometry, photon, quasar, luminosities, antineutrinos, protostar, cadmium sulfide, crystallites, absorption coefficient, emittance, transferase, eclipsing binary, photochemistry, josephson junction, maxima, chondrites, operon, quinone, superfluid, pions, proton, neutron, nucleons, mesons, muons, photons, quarks, storeys, hadronic, antisymmetric, charge, entropic, isoscalar, pseudoscalar, 7r, \u00b0, affectional, anomic, antiferromagnetic, baryonic, bimolecular

cecil frank powell, powell

meson, mesotron

pi-meson