The Mechanics of Fluid and Gas . At 4 p.m.. H. 4" authorship and. In. Kachanova is the final part of an extensive and in-depth study devoted to the basics of fluid and gas mechanics. This work will become an indispensable assistant for students, graduate students and specialists in the field of physics, engineering and applied mathematics. If you are looking for a high-quality and detailed manual of mechanics that will help you better understand the behavior of liquids and gases, then this book is exactly what you need. In the fourth part of Kachanov’s book, readers will find many fascinating topics that raise important questions regarding the dynamics and static state of liquids and gases. The author masterfully explains complex concepts such as the Navier-Stokes equations, vortex dynamics, and the interaction of flows with solids. Kachanov not only expounds the theory, but also illustrates it with practical examples, which makes the material more accessible and understandable. Readers will be able to see how the principles of mechanics are applied in real-life situations, from ship design to car aerodynamics. This book will especially appeal to engineering students who seek to deepen their knowledge in the field of mechanics. It will also be useful to engineers and researchers engaged in research in the field of hydrodynamics and aerodynamics. If you are interested in topics related to physics, mathematics and engineering, the "Mechanics of fluid and gas" will be a real find for you. Kachanov raises many topical topics in his book, such as the influence of external factors on the behavior of liquids and gases, as well as methods for their modeling. The book touches on important aspects concerning the stability of flows, which is a key point in the design of various systems, from pipelines to aircraft structures. Readers will be able to understand how different parameters affect the dynamics of flows and how this knowledge can be applied to practical problems. Kachanov's style is distinguished by clarity and logical presentation, which makes his books available to a wide audience. It skillfully combines theoretical aspects with practical examples, which allows readers not only to remember the material, but also to apply it in practice. In the previous parts of the series, the author has already established himself as a master of explaining complex topics in simple and understandable language, and in this part he continues to follow this principle. In addition, Kachanov’s work is not limited to the mechanics of liquids and gases. He is also the author of numerous articles and textbooks on various aspects of physics and engineering. His research and publications have gained recognition in academia, and his work is often used in educational institutions around the world. If you are looking for books on mechanics, physics or engineering, then "Mechanics of fluid and gas. At 4 p.m.. H. 4" will be a great addition to your library. This book will not only enrich your knowledge, but also inspire new research and discoveries in the field of mechanics. Do not miss the opportunity to immerse yourself in the world of fluid and gas dynamics with one of the best authors in this field!