Hiding in Plain Sight: Physics!

On a flight yesterday from Kirkenes to Tromsø, Norway, I kept my face plastered to the window as we made our approach to the airport. Serrated peaks draped in winter snow soared above the fjords as we descended. And then I spotted this beautiful example of simple physics, hiding in plain sight right below us: a spectacle of interfering wave patterns created by the interaction of swells in the Tromsøysundet strait and the wake of the boat cruising toward my camera. Interference occurs w