The third installment of the ¶¶ÒõÂÃÐÐÉä Wizards series at the University of Colorado at Boulder, "Boom! The Physics of Air Pressure and Sound," will be held on Saturday, Nov. 28 at 9:30 a.m. in Duane Physics room G-030. ¶¶ÒõÂÃÐÐÉä-Boulder physics instructor Michael Dubson will use exciting visual displays to explain several scientific phenomena including sonic booms, sound and the Bernoulli Principle.