Example image of eyePlorer eyePlorer map for 'Up quark': Elementary particle Matter Quark Atomic nucleus Down quark Neutron Proton Electric charge Elementary charge Generation (particle physics) Electromagnetism Fermion Fundamental interaction Gravitation Spin (physics) Strong interaction Weak interaction Additive inverse Antiparticle Eightfold Way (physics) George Zweig Hadron Murray Gell-Mann Strange quark SLAC National Accelerator Laboratory Pion Particle zoo Flavour (particle physics) Special unitary group Yuval Ne'eman Isospin Quark model Deep inelastic scattering J/ψ meson Parton Richard Feynman B meson Eta meson Lambda baryon Sigma baryon Strange matter Strangelet T meson Strangeness production Kaon Quark star X and Y bosons Color–flavor locking Nicola Cabibbo Subatomic particle