by Orthogonal Jones July 10, 2008
by Nate_Dawg September 05, 2006
A subatomic particle that are composed of two groups. Quarks, which makes up most of the mass of an atom, includes proton and neutron, and leptons which include electrons and neutrinos. Take a Quantum physics course for more info.
by hobos_on_trains April 02, 2010