Book: Fluctuations and Waves . Lectures" by authors B. A. Aleshkevich, L. G. Grandfather and B. A. Karavaeva is a fascinating and deep dive into the world of physics, which will be a real discovery for students, teachers and anyone interested in the basics of mechanics and wave processes. In this tutorial, the authors share their knowledge and experience, creating an accessible and understandable text that not only explains complex concepts, but also inspires further study of physics. The focus of the book is on fluctuations and waves phenomena that permeate our lives and the world around us. From the sound waves we hear to the electromagnetic waves that allow us to communicate at a distance, these topics are fundamental to understanding the multitude of processes in nature and technology. The authors carefully work through each topic, starting with the basics and gradually deepening into more complex aspects, which makes the material available to both beginners and those who already have basic knowledge in physics. The book will be especially useful for students of physical, mathematical and engineering specialties, as well as teachers who are looking for a quality guide for preparing lectures and seminars . It is suitable for those who are fond of physics and want to better understand how vibrations and waves work, as well as for those who seek an in-depth study of these phenomena. If you are looking for literature that will help you prepare for exams or simply expand your knowledge, “Wheels and Waves. It will be a great choice.. The themes raised in the book are diverse and multi-faceted. The authors discuss both theoretical aspects and practical applications of oscillations and waves in various fields of science and technology. They touch on issues relating to mechanical oscillations, acoustics, electromagnetic waves, and even quantum phenomena. This allows the reader to see how physics interacts with other sciences and how it is applied in real life. The book not only enriches knowledge, but also develops critical thinking, helping the reader to analyze and interpret physical phenomena. The style of the authors is distinguished by the clarity and logic of the presentation . Each lecture is structured in such a way as to gradually introduce the reader to the topic, starting with simple concepts and moving on to more complex ones. This makes the material easy to understand and remember. In addition, the book contains illustrations and examples of tasks that help to better understand the topics under consideration and apply the theory in practice. In. A. Aleshkevich, L. G. Dedenko and V. A. Karavaev are well-known specialists in the field of physics, and their work is respected in the scientific community. They are also the authors of other textbooks and articles that cover a wide range of topics in physics. Their experience and in-depth knowledge make "Variations and Waves. Lectures are a valuable resource for anyone who wants not only to study physics, but also to love it. If you are looking for books on physics that will help you to understand the fluctuations and waves, pay attention to the "Variations and waves. Lectures. This book will be your reliable assistant in the study of physics and will open up new horizons of knowledge for you. Do not miss the opportunity to immerse yourself in the fascinating world of science that awaits you in the pages of this book!