"The Key to Success in Physics is the Ability to Keep Coming Back"

With exotic science equipment in tow, University of Pennsylvania Physics Professor Larry Gladney gave Philadelphia high school students an eye-popping demonstration of the interactions among sound, light, and energy, but the key message was: "Don't give up."

"The only thing that succeeds is persistence," said Gladney, who conducted experiments before 120 students Wednesday at the High School for the Creative and Performing Arts as part of program sponsored by HistoryMakers, a Chicago-based entity that aims to record, preserve, and share the life stories of African Americans.

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