special topics

This volume has indeed taken a very unique approach to quantum mechanics, and I liked it very much. However, a few things may need to be improved: 1) I have noted that a significant portion of this volume is clearly taken directly from the excellent Q.M. book of Schiff. It would be nice if the author could give a little bit more of his own explanations and insights to make the volume even more original and useful. 2) I felt that too little emphasis was given to the matrix approach to Q.M., making some materials difficult to follow when the matrix formulation is invoked. 3) The application sections really linked well Q.M. to real-life problems. Being a devices physicist myself, the topics of these application examples suited my taste well. However, some example details were simply too brief, turning them into a source of confusion rather than clarification (e.g. "Excitons in Semiconductors." More words should be said about the "Central cell nature..."). - S.C. Ph.D.