While professional courses and how-to manuals can prepare us for expected events that will occur in the course of our careers, there remains an untapped reservoir of life experience that cannot be prepared for in training or study. Revised to include more information on analytical models for wavelength independence, Radiation Heat Transfer, Augmented Edition has been rearranged, providing problems within each chapter rather than at the end of the book. Written by Ephraim M. Sparrow, a generalist who works on a very broad range of problems that encompasses almost all mechanical engineering topics, the book presents key ideas without being exhaustive. Sparrow is in charge of the Laboratory for Heat Transfer and Fluid Flow Practice, whose function in to undertake both industrially bases and fundamental problems that fall within the bounds of heat transfer and fluid flow.