Measurements in the optical and microwave wavelength ranges: in 2 h. H. 1: Measurements in the microwave range" by A. P. Beloshytsky is a unique textbook that immerses the reader in the world of high technology and scientific research. This work will become an indispensable assistant for students, graduate students and specialists in physics, radio engineering and optics. It discusses in detail the methods and technologies used for measuring in the microwave range, which makes it relevant both for the educational process and for practical activities. The book consists of two parts, and the first part focuses on the microwave range, which occupies an important place in modern scientific research and applied developments. Author, A. P. Beloshytsky, known for his deep knowledge in the field of physics and engineering, shares his achievements with readers, which makes the material accessible and understandable even for those who are just starting their way in this field. The book deals with both theoretical aspects and practical measurement methods, which allows the reader not only to assimilate the information, but also to apply it in practice. The topics raised in the book cover a wide range of issues, ranging from the basics of microwave technology to modern measurement methods. The reader will be able to learn about the principles of operation of various measuring instruments, how to conduct experiments correctly and interpret the data obtained. The book also addresses issues related to calibration of equipment and elimination of errors, which is an important aspect in any scientific work. This book will be especially useful for engineering students, graduate students, and for practicing engineers and researchers who seek to expand their knowledge in the field of measurement. If you are interested in topics such as radio engineering, physics, optics or electronics, then this guide will be a real discovery for you. It will help not only to consolidate theoretical knowledge, but also to develop the practical skills necessary for successful work in the scientific and engineering fields. Style A. P. Beloshytsky is distinguished by clarity and logical presentation, which makes his works available to a wide audience. It skillfully combines scientific rigor with practical examples, allowing the reader to easily assimilate complex concepts. In his arsenal there are also other well-known works that have earned recognition in the scientific community. The book "Measurements in the optical and microwave wavelength ranges" is no exception and occupies a worthy place among the textbooks on physics and engineering. If you are looking for a high-quality training manual on microwave measurements, which will help you understand complex issues and give the opportunity to apply the knowledge gained in practice, then “Measurements in the optical and microwave wavelength ranges: 2 h. H. 1: Microwave measurements" is exactly what you need. This book will be your reliable companion in the world of science and technology, opening up new horizons and opportunities for your professional growth.