The book "Mechanics of liquid and gas" by I. In. Kachanova is a fascinating and deep immersion in the world of physics, which will not leave indifferent neither students nor teachers, nor just lovers of science. This work is not only a textbook, but also a real encyclopedia of knowledge, covering a wide range of topics related to the mechanics of liquids and gases. In his book, Kachanov masterfully explains complex concepts such as dynamics and static mechanics, the properties and behavior of liquids and gases, and their interactions with solids. The reader will be able to learn how different factors, such as temperature, pressure, and speed, affect the behavior of these substances under different conditions. The author uses many examples and practical problems, which makes the material accessible and understandable, even for those who are just starting their way in the study of physics. Who can like this book? First of all, it will be useful for students of technical and natural sciences who study physics and related disciplines . However, interest in it can be shown by wider circles of readers - from schoolchildren preparing for exams to professionals working in the field of engineering, hydrodynamics and aerodynamics. The book will also be an excellent addition for teachers who want to enrich their course with new examples and tasks. The topics raised in Fluid and Gas Mechanics cover not only theoretical aspects, but also the practical application of knowledge. Kachanov discusses such important issues as the movement of fluid in pipelines, the aerodynamics of aircraft and even the basics of hydraulics. These topics are not only relevant, but also vital for many modern technologies, from car design to the creation of new heating and cooling systems. The book highlights how physical laws affect our daily lives and how they can be used to solve real-world problems. Style and . In. Kachanova is clear and logical . He skillfully combines theory with practice, which allows the reader not only to understand the material, but also to see its application in real life. Kachanov is the author of several other well-known works in the field of physics and mechanics, and his experience and deep knowledge make this book especially valuable. By reading Fluid and Gas Mechanics, you will not only gain a theoretical base, but you will also be able to develop your analytical abilities, which will be useful in your future career. If you are looking for a book that will help you understand the complex issues of mechanics, or you just want to expand your knowledge in this area, “Liquid and Gas Mechanics” will be an excellent choice. It will not only enrich your knowledge, but also inspire you to further study physics and its applications. Do not miss the opportunity to discover a world where physical laws rule the ball, and knowledge becomes the key to understanding the surrounding reality.