The book “The Theory of Oscillations and Waves” by Vladimir Ilyich Sergeev is a fascinating and deep immersion into the world of physics, which will become an indispensable tool for students, graduate students and anyone interested in physical phenomena associated with oscillations and waves. In this work, the author masterfully combines theoretical foundations with practical examples, which makes the material accessible and understandable even for those who are just starting their way in the study of physics. The book focuses on the basic principles of oscillatory processes and wave propagation in various environments. Sergeeva not only expounds facts and formulas, but also creates a living picture in which physical laws come to life. Readers will be able to learn how vibrations affect the world around them, from the sound waves that fill our lives to the mechanical vibrations that underlie many technologies. The author examines both classical and modern approaches to the study of these phenomena, including quantum aspects, which makes the book relevant for specialists in the field of physics. Who can like this book? First of all, it will be of interest to students of physical and mathematical faculties, as well as to those who study engineering disciplines . However, not only professionals will find useful information in it .. Science lovers, teachers and even schoolchildren who want to deepen their knowledge will be able to learn a lot from the book. Anyone who wants to understand how the world works at the level of physical processes will find answers to their questions here. The topics raised in The Theory of Oscillations and Waves cover a wide range of issues, ranging from the simplest harmonic oscillations to complex wave phenomena such as interference and diffraction. Sergeeva focuses on the importance of the mathematical apparatus, which allows describing physical processes, and on how this knowledge is applied in real life. He emphasizes that understanding vibrations and waves is not just an academic task, but a key to solving many practical problems in engineering, medicine, and even ecology. The author's style is distinguished by clarity and accessibility of presentation. Sergeyev manages to explain complex concepts in simple words, which makes his book an ideal textbook. His approach to learning is based on the principle that knowledge should not only be useful, but also fascinating. The reader not only remembers information, but also begins to see physics in everyday life, which makes the learning process more natural and interesting. In addition to the Theory of Oscillations and Waves, Vladimir Ilyich Sergeev is the author of a number of other well-known works devoted to various aspects of physics. His books are often recommended to both students and teachers, which indicates a high level of confidence in his work. If you are interested in topics such as mechanics, electromagnetism or thermodynamics, you will surely find in his work a lot of useful and inspiring. Thus, the Theory of Oscillations and Waves is not just a textbook, but a real find for anyone who wants to understand physics and its laws more deeply. This book will be your reliable companion in the study of oscillatory processes and waves, opening up new horizons of knowledge and opportunities for you. Do not miss the chance to take a step towards the fascinating world of physics together with Sergeyev!