Randy Knight taught introductory physics for thirty-two years at Ohio State University and California Polytechnic State University, where he is Professor Emeritus of Physics. Professor Knight received a PhD in physics from the University of California, Berkeley, and was a post-doctoral fellow at the Harvard-Smithsonian Center for Astrophysics before joining the faculty at Ohio State University. A growing awareness of the importance of research in physics education led first to Physics for Scientists and Engineers: A Strategic Approach and later College Physics: A Strategic Approach. Professor Knight's research interests are in the fields of laser spectroscopy and environmental science. When he's not in front of a computer, you can find Randy hiking, traveling, playing the piano, or spending time with his wife Sally and their five cats.