The book "Determination of gas density" edited by Timashev A. N. and other authors is an indispensable work for all who are interested in physics, chemistry and engineering sciences. It discusses in detail the methods for determining the density of gases, which is a key aspect in various fields of science and technology. This work will be useful for both students and professionals working in laboratories, scientific institutions and manufacturing companies. From the first pages, the book immerses the reader in the fascinating world of gases and their properties. The authors share their experience and knowledge, explaining how to correctly measure the density of gases, what factors affect these measurements and how to interpret the data obtained. Unlike many textbooks, "Determination of Gas Density" is not limited to theoretical aspects. The book includes practical examples and assignments that will help the reader to consolidate the material studied and apply it in practice. Who can like this book? First of all, it will be of interest to students of technical specialties studying physics and chemistry . It will also be an excellent help for graduate students and young scientists who are just starting their way into scientific activity. Engineers working in the gas industry will also find a lot of useful information in it that will help them in everyday practice. In addition, the book may be of interest to teachers who are looking for quality materials for their classes . The topics raised in the book cover a wide range of issues related to the physical properties of gases. The authors discuss the effect of temperature and pressure on density, as well as the characteristics of various gases such as oxygen, carbon dioxide and methane. It is important to note that the book not only lists facts and formulas, but also helps the reader to understand why these facts are important and how they can be applied in real life. This makes “Determination of Gas Density” not only a tutorial, but also a real guide to the world of gases. The style of the authors is clear and accessible. They skillfully use real-life examples, which makes the material more understandable and interesting. In addition, the book contains many illustrations and tables that help to visualize complex concepts. This is especially important for those who prefer visual perception of information. Timashev A. N. This is not the first time that he and his colleagues have addressed the topic of gases. In their portfolio there are other works on physics and chemistry that also deserve attention. Their research and publications have gained recognition in the scientific community, which confirms the high level of their professionalism and in-depth knowledge in their field. If you are looking for a high-quality and informative guide to determining the density of gases, then the book “Determination of the density of gas” will be an excellent choice. It will not only expand your knowledge, but also help you see how the theory is applied in practice. This book is not just a set of formulas and theories, but a whole world full of discoveries and new knowledge that awaits you in the pages of this unique edition.