James S. WalkerJames S. Walker is Emeritus Professor of Physics at Washington State University and was Boeing Distinguished Professor of Science and Mathematics Education at the time of his retirement. He has previously held positions at the University of Pennsylvaia and the Massachusetts Institute of Technology. He is the author of a successful undergraduate textbook, Physics (Addison-Wesley), now in its fifth edition, and A Student's Guide to the Ising Model (Cambridge University Press). Read More Read Less