Bill Phillips (center) works on a demonstration with Sarah Wendel (left) and Faiz Mohideen (right).
Steve Olmschenk (right) explains an ion trap experiment to Sarah Wendel (left) and Herb Edelstein (center).
Luis Orozco (left) confers with Faiz Mohideen (center) to find the best focus on a two-lens system. Sed Rice (far right) and Jasper Lane (right) look on.
David Norris (far left) shows Chris Hahn (center) and Jasper Layne (right) how filters work in his experiment.
Steve Rolston (far right) talks about teaching optics. From left: Sarah Wendel, Bill Phillips, Herb Edelstein and Faiz Mohideen.
Sarah Wendel works on focusing with two hand-held lenses.
Yau-Jong Twu (right) and Sarah Wendel (left) focus their lenses.