The book "Mechanics of liquid and gas" by A. N. Kondratovich is an exciting and deep dive into the world of physics, which will be an indispensable tool for both students and professionals in the field of engineering and science. In this work, the author masterfully combines theoretical foundations with practical examples, which makes the material accessible and understandable to a wide audience. In “Liquid and Gas Mechanics”, Kondratovich explores the basic principles underlying the behavior of liquids and gases. The book covers a wide range of topics, including fluid dynamics, thermodynamics, and various aspects of hydrodynamics and aerodynamics. The author shares his knowledge about how liquids and gases behave in different conditions, which is especially important for students of technical specialties, as well as for practicing engineers working in areas such as mechanical engineering, aviation and energy. Who can like this book? First of all, it will be of interest to students and graduate students studying physics, mechanics and engineering sciences . It will also attract the attention of teachers and researchers who are looking for a modern and relevant manual for their classes. Even for those who are simply interested in physics and want to understand more deeply how the phenomena around us work, the Mechanics of Liquid and Gas will be a real find. One of the key topics raised in the book is the interaction between liquids and gases, as well as their impact on the environment. Kondratovich not only explains theoretical aspects, but also illustrates them with practical examples and problems, which allows the reader to better assimilate the material. The book also discusses modern technologies related to the use of liquids and gases, which makes it especially relevant in the context of the rapidly changing world of science and technology. Style A. N. Kondratovich is distinguished by the clarity and logic of the presentation, which allows the reader to easily follow the course of the author’s thoughts. He uses understandable language, avoiding overly complex terms, which makes his book available even to those who are just beginning to get acquainted with this topic. This quality, along with the rich illustrative material, makes the “Mechanics of liquid and gas” not only a textbook, but also an interesting reader. In addition, Kondratovich is known for his other works in the field of mechanics and physics, which also deserve attention. His approach to teaching and explaining complex concepts makes him one of the leading authors in his field. Readers interested in topics related to thermodynamics, hydraulics and aerodynamics will find in his works a lot of useful information and inspiration for further research. Thus, the “Mechanics of liquid and gas” is not just a textbook, but a whole world of knowledge that opens the door for the reader to the fascinating and complex world of physics. This book will become a reliable companion for all who seek to understand the laws of nature and apply them in their professional activities. If you are looking for a quality source of information on the mechanics of liquids and gases, then work A. N. Kondratovich definitely deserves your attention .