2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45368Experimental results on jet physics at LEP and SLC are reviewed and compared with perturbative QCD predictions. The discussion includes determinations of the strong coupling $\as$, measurements of event shape distributions and jet cross sections, studies of subjet multiplicities and tests of QCD coherence.32 pages (+14 figs. available in hard copy upon request to catani@fi.infn.it), LateXHigh Energy Physics - Phenomenologytext