The book "Interaction of -radiation with substance" by H. N. Mitkina is a fascinating and in-depth study of one of the key aspects of particle physics and nuclear physics. This work will be of interest to both undergraduate and graduate students, as well as experienced professionals in physics, radiobiology and related disciplines. In his work, Mitkin immerses the reader in the world of -radiation, one of the types of ionizing radiation that occurs during radioactive decay. The author not only outlines the theoretical foundations, but also offers practical examples that help to better understand how -radiation interacts with various substances. The book covers a wide range of topics, including ionization mechanisms, interactions with atoms and molecules, and the effects of -radiation on biological systems. This makes it useful not only for physicists, but also for biologists, physicians and environmentalists. One of the main topics raised in the book is the question of how -radiation affects living organisms. Mitkin considers both positive and negative aspects of this interaction, which makes his work particularly relevant in light of current research in radiation safety and medicine. Readers will be able to learn about how -radiation is used in the diagnosis and treatment of diseases, as well as the potential risks associated with its impact on human health. The book is written in accessible language, which allows even those who are not experts in the field of physics, to understand the basic ideas and concepts. However, for a deeper understanding, the reader may need a basic knowledge of physics and mathematics. This makes the book an excellent choice for undergraduate and graduate students, as well as for academics who wish to update their knowledge in this field. Style N. N. Mitkina is distinguished by the clarity and logic of the presentation . He skillfully combines theoretical aspects with practical examples, which makes reading not only informative, but also fascinating. The author also includes many illustrations and graphs in the text, which help to visualize complex processes and make the material more accessible to perception. This quality makes the book especially valuable for teachers who can use it as a teaching aid. In addition to "Interaction of -radiation with substance", H. N. Mitkin is the author of a number of other significant works on nuclear physics and radiation safety. His research in the field of interaction of radiation with matter has been recognized both in Russia and abroad, which confirms his status as an expert in this field. If you are interested in physics, radiation, medicine or just want to expand your knowledge about the interaction of matter and radiation, the book “Interaction of -radiation with matter” will be a real find for you. It will not only enrich your knowledge, but also make you think about the importance of radiation safety in our world. Read, explore and explore new horizons with H. N. Mitkin!