QUARKS, MESONS AND MAGNETIC-MOMENTS

Magnetic moments are of importance in many fields of science, besides physics. All macroscopic magnetic moments can be traced back to the ma gnetic moments of hadrons and leptons. From models for the magnetic mo ments of the hadrons that are considered here, we give evidence for th eir internal structure. We concentrate on the well-measured baryon mag netic moments, in particular those belonging to the 'octet' and, to a lesser extent, to the 'decuplet'. We calculate these magnetic moments in a relativistic quark model, coupled to the pionic field, and find s atisfactory overall agreement with their measured values. Even the rec ently measured magnetic moment of the baryon with the highest mass, th e OMEGA-(1672), requires a sizeable meson cloud contribution.