Quarks and Leptons as Fundamental Particles: Proceedings of the XVIII. Internationale Universitätswochen für Kernphysik 1979 der Karl-Franzens-Universität Graz at Schladming (Steiermark, Austria), 28th February - 10th March 1979

The main task of an experimental talk at a theoreticians school should probably be a tempering one. In this respect, e+e- physics may have been a bad choice. The field has so rapidly developed and dis­ coveries are chasing each other that much of the optimism of theory has passed over to e+e- experimentalists. A vast amount of experimental material arose from the simple reaction of e+e- annihilation. I, therefore, have to limit myself to recent results - most of them less than one year old....