Lectures on Physics . At 2 p.m.. H. 2. Wave processes. Wave and quantum optics . Quantum mechanics . Multielectronics is a unique and valuable resource for students, graduate students and anyone interested in physics at a deeper level. This work, created by a team of authors, is a continuation of an extensive course of lectures covering key aspects of physics, and is an indispensable guide to the study of complex topics such as wave processes, quantum mechanics and optics. The second part of the book immerses the reader in the world of wave phenomena, which are the basis of many modern technologies and scientific discoveries. You will be able to learn about how waves interact with different media, how they spread and how their properties affect the behavior of light and other forms of radiation. This knowledge will not only expand your horizons, but also help you understand how wave processes are at the heart of technologies such as lasers, fiber-optic communications and many others. The book also explores quantum optics and quantum mechanics in depth, making it particularly relevant to physics and engineering students. Here you will find explanations of complex concepts such as superposition, entanglement and the uncertainty principle, which may seem difficult to perceive, but thanks to the clear and accessible style of presentation of the authors, these topics become understandable and fascinating. Readers interested in modern scientific achievements and theoretical foundations will find a lot of useful information in this book. The book pays special attention to multielectronic systems, which is an urgent topic in the context of modern research in the field of condensed matter physics and quantum technologies. You will be able to understand how the interaction between electrons in multicomponent systems affects their behavior and properties, which opens up new horizons for research and practical application. Who can like this book? First of all, it will be useful for students and graduate students studying physics, as well as teachers who are looking for quality materials to prepare for classes . However, even those who are simply interested in science and want to understand the laws of physics more deeply will find it a lot of interesting. The book is suitable for both young scientists and experienced professionals seeking to update their knowledge in a rapidly developing field. The style of the authors is clear and logical, which makes the material available for perception. They skillfully combine theory and practical examples, which helps the reader not only to assimilate information, but also to see its application in real life. If you are interested in such works as Landau’s Course in General Physics and Lifshitz or Larry Kotler’s Physics for Future Presidents, then this book will be a great addition to your library for you. In conclusion, "Comments of lectures on physics . At 2 p.m.. H. 2. Wave processes. Wave and quantum optics . Quantum mechanics . Multielectronic” is not just a textbook, but a real find for anyone who wants to deepen their knowledge in the field of physics. This book will inspire you to new discoveries and help you understand the complex but fascinating aspects of science. Do not miss the opportunity to get acquainted with it and expand your horizons!