The book "Electrovacuum devices of the millimeter wave range", written by Yakovenko and Rakitin, is a unique and in-depth study devoted to one of the most relevant and promising areas of modern science and technology. With the rapid development of technology and growing interest in millimeter waves, this work is becoming not only useful, but also a necessary source of knowledge for specialists, students and anyone interested in radio engineering and electronics. In this book, the authors consider in detail the principles of operation of electro-vacuum devices used in the millimeter wave range. They cover both theoretical aspects and practical applications, making the material available to a wide audience. The reader will be able to learn about the different types of devices, their design, as well as about the methods of their testing and optimization. Interestingly, the book not only presents traditional approaches, but also discusses the latest developments, which makes it possible to understand how quickly this area is changing and what prospects open up for scientists and engineers. Who can like this book? First of all, it will be useful for students of technical universities studying radio engineering, electronics and related disciplines . It will also attract the attention of graduate students and young scientists working in the field of physics and engineering. Practicing engineers and researchers will find in it valuable recommendations and examples that will help in their professional activities. In addition, the book will be of interest to anyone who wants to expand their knowledge of modern technologies and their application in various fields, including communications, medical equipment and security systems. The topics raised in the book cover a wide range of issues related to electro-vacuum devices. The authors discuss the physical basis of the devices, their characteristics, as well as methods of design and production. Particular attention is paid to topical issues, such as improving the efficiency and reliability of devices, which makes the book especially valuable for those who seek innovation in their field. In addition, environmental aspects and issues of sustainable development of technologies are considered, which is an important trend of the modern scientific community. The style of Yakovenko and Rakitin is clear and accessible, which allows even complex technical concepts to be explained in simple language. This makes the book not only a textbook, but also a fascinating reading for anyone interested in science and technology. The authors have already established themselves as experts in their field, and their previous works have also been popular among readers, which confirms their high level of professionalism and deep understanding of the subject. If you are looking for a book that will help you immerse yourself in the world of electro-vacuum devices and millimeter waves, “Electro-vacuum devices of the millimeter wave range” will be an excellent choice. It will not only expand your knowledge, but also inspire new ideas and projects. Do not miss the opportunity to get acquainted with this important work, which will certainly take a worthy place on the shelf of everyone who is interested in modern technologies and their development.