PARTICLE PHYSICS A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site fermion Any particle of matter which is characterized by spin in odd half-integer quantum units (1/2,3/2,5/2...). Fermions were named by Paul Dirac in 1947 after the Italian physicist Enrico Fermi. They obey the Pauli exclusion principle and have antisymmetric wavefunctions. Quarks, leptons (such as the electron), and baryons (such as the proton and neutron) are all fermions. Compare with boson. Related category    • PARTICLE PHYSICS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP