Stephen Wilk is a contributing editor for the Optical Society of America and the author of Medusa: Solving the Mystery of the Gorgon (OUP; 2000). He holds a Ph.D. in Physics and has worked on Laser Propulsion and High Energy Lasers at Textron and MIT's Lincoln Labs, and has designed and built optical apparatus at Optikos Corporation, Cognex, and AOtec. He was previously a visiting professor at Tufts and a visiting scientist at MIT.