Michael Gallis stands in front of a white board with fractions written on it as he points to a projection screen showing the physics of an amusement park's pirate ship ride.

Michael Gallis, associate professor of physics at Penn State Schuylkill, shows how his work in the Open Source Physics Project can be completely customized for user needs. The no-cost code helps physics educators by providing them with a visual accompaniment to explain physics theory.

Image: Samantha L. Bower