Dan Fullerton is a physics teacher at Irondequoit High School in Rochester, NY, an adjunct professor of microelectronic engineering at Rochester Institute of Technology, and director of APlusPhysics.com. He lives in Webster, NY, with his beautiful wife, indefatigable daughter, and sleepy dog. You can follow Fullerton on twitter as @aplusphysics and read his blog at http://aplusphysics.com/flux.