Michael Alley Mechanical Engineering Department Virginia Tech Blacksburg, VA 24061 USA alley@ Cover photographs: (Top): Richard Feynman, Nobel prize winner in physics, lecturing on quantum mechanics (courtesy of the Archives, California Institute of Technology, photo ). In this photo, Feynman demonstrates the value of communicating with gestures. Gestures and other aspects of delivery are discussed in Chapter 5. (Bottom left): Lightning demonstration at the Deutsches Museum in Munich, Germany (courtesy of the Deutsches Museum). In this demonstration, a lightning bolt strikes a church that is not well grounded. Because the church is not well grounded, a second stroke occurs between the.
