Subatomic particles. Computer artwork of a table of subatomic particles. The top six are quarks,which make up particles such as protons and neutrons. The symbols represent the six types (or insflavours) of quark: up (arrow up),down (arrow down),charm (crescent),strange (question mark),top (white cap) and bottom (white base). The lower six are the leptons. Along the bottom row,from left: the electron,the muon,and the tauon. Each of these has an associated neutrino represented above it. The electron,muon and tauon all have the same charge (formally -1),but their mass increases from left to right. Neutrinos have no mass or charge |