Book: Fluctuations and Waves . The Wave Optics by E. In. Meleshko is a fascinating and deep dive into the world of physics, which will be a real find for students, teachers and anyone interested in the nature of light and sound. The author, known for his scientific works and teaching experience, offers readers not just a textbook, but a whole philosophy of understanding the oscillatory processes and wave phenomena that surround us in everyday life. In this work, Meleshko reveals the basic principles of oscillations and waves, starting with the simplest mechanical oscillations and ending with complex concepts of wave optics. The reader will be able to learn how waves form, propagate, and interact with different environments. The book is replete with illustrations and examples from real life, which makes the material accessible and understandable even for those who do not have deep knowledge in physics. The book covers a wide range of topics, from the basics of acoustics and mechanics to more complex topics such as interference, diffraction and polarization of light. Meleshko not only describes physical phenomena, but also immerses the reader in their historical context, telling about the great scientists who made significant discoveries in the field of wave optics. This makes it possible to better understand how scientific ideas developed and what experiments were behind them. The book will be especially interesting for physics students, graduate students and teachers, as well as anyone who wants to expand their knowledge in the field of natural sciences. It will be an excellent addition to physics training courses and can be used as a reference for solving practical problems. Due to the available language and logical presentation of the material, "Variations and Waves. Wave optics" is suitable for both self-study and for use in the educational process. Meleshko, as an author, is distinguished by a special style of presentation that combines scientific rigor with a living and accessible language. His previous work has also earned the recognition and attention of readers, which confirms his high level of professionalism and deep understanding of the subject. In this book, he continues the tradition of high-quality scientific presentation, making complex topics understandable to a wide audience. The topics raised in the book are important not only for students and academics, but also for anyone who wants to better understand the world around them. We live in an era where knowledge about physical processes is becoming increasingly relevant, especially in light of new technologies and scientific discoveries. Meleshko’s book helps readers develop critical thinking and a scientific approach to the study of the surrounding reality. If you are looking for literature that will help you understand how waves and vibrations work, and how they affect our lives, It will be a real revelation to you.... This is not just a textbook, but a key to understanding many of the processes we take for granted. Do not miss the opportunity to immerse yourself in the world of physics with E. In. Small and discover new horizons of knowledge!