Lectures: Sept. 22–Oct. 9

Sept. 22 Physics and astronomy, “Hi-fidelity Music Reproduction and the Human Audibility of Ultrasonic Frequencies,” Milind N. Kunchur, USC professor of physics and astronomy. 4 p.m., Jones Physical Sciences Center, Room 409. Refreshments served at 3:45 p.m. Sept. 23 Chemistry and biochemistry, “Concave Chemistry,” Bruce C. Gibb, Department of Chemistry, University of New Orleans, 3:30 p.m., Jones Physical Sciences Center, Room 006. Refreshments served at 3:15 p.m. Sept. 30 Chemistry and biochemistry, Walter Scrivens, chemistry and biochemistry, 4 p.m., Oct. 5 Journalism and mass communications, second-annual Buchheit Family Lecture. Speaker is Jim Hoagland, Pulitzer Prize-winning correspondent and 1961USC graduate. 7 p.m., Law School Auditorium. Free and open to the public. 9/05