Chad Orzel is an Associate Professor of Physics and Astronomy at Union College in Schenectady, NY. He earned a BS in Physics from Williams College and a PhD in Chemical Physics from the University of Maryland, College Park. In addition to teaching and conducting research, he is the author of several books explaining physics to nonscientists. His first book, How to Teach Quantum Physics to Your Dog, has been translated into more than a dozen languages. Subsequent books include How to Teach Relativity to Your Dog; Eureka: Discovering Your Inner Scientist; Breakfast with Einstein: The Exotic Physics of Everyday Objects; and A Brief History of Timekeeping: The Science of Marking Time, from Stonehenge to Atomic Clocks. He also maintains a blog about science (among other topics) at ChadOrzel.com, contributes to Forbes online, and writes on Substack. In 2021, he was named a fellow of the American Physical Society.