图书介绍：A great triumph of twentieth-century physics， the theory of quantum mechanics， is now nearly 40 years old， yet we have generally been giving our students their introductory course in physics （for many students， their last） with hardly more than a casual allusion to this central part of our knowledge of the physical world. We should do better by them. These lectures are an attempt to present them with the basic and essential ideas of the quantum mechanics in a way that would， hopefully， be compre