What do Wayne Gretzky and thermodynamics have in common? A lot more than you might think. The game the National Hockey League calls the coolest game on earth is also a fast-paced, dynamic display of physics in action. In The Physics of Hockey, physicist and amateur hockey player Alain Hach? examines some of the physical principles behind the world's most popular winter team sport. What makes ice so slippery you can skate on it? How...