Students Test Bed of Nails at Penn State Behrend 'Physics Day'

More than 100 students from six area high schools attended the fifth annual “Physics Day” program at Penn State Behrend. They built pizza-box spectrometers and, using a laser, determined the track spacing on a compact disc.

The Nov. 26 program closed with a demonstration show that highlighted several laws of physics, including Bernoulli’s principle, which was first set forth in 1738. To explain it, senior laboratory technician Jerry Macgraw used a leaf blower to unspool a roll of toilet paper. (He also exploded hydrogen balloons and fired a pingpong-ball cannon.)

The Erie Times-News wrote this story about the program.