This book is well written and all the derivations are exceptionally clear, simple and elegent. (See, for example, the derivation of Planck's radiation law, Fermi-Dirac and Bose-Einstein distribution.) The authors had explained the most difficult concepts in Thermal Physics in a most simple and clear manner that is so easy even a Cave Man can understand it and get a 100 score in the test. However, this book will not be appreciated if a person's I.Q. is below 75. I gave this book 10 stars. This book is suitable for all undergraduate senior student who has a solid background.