Crystal Diodes and Triodes by A. C. Bronovitsky is a fascinating and informative work that immerses the reader in the world of semiconductor electronics. This is not just a textbook, but a real encyclopedia of knowledge for everyone who is interested in the basics and modern achievements in the field of electrical and radio engineering. In his book, Bronowitz describes in detail the principles of operation of crystalline diodes and triodes, their design and application. The author begins with the basics, explaining what semiconductors are, how they function and what role they play in the modern world. The reader will learn how these components became the basis for the creation of a variety of electronic devices, from simple radios to complex computer systems. What makes this book particularly appealing is its accessible style of presentation. Bronowitz uses simple and understandable examples, which allows even beginners in the field of electronics to easily absorb material. He is not afraid to delve into technical details, but always remembers that his readers may be far from engineering education. This makes the book ideal for students of technical specialties, as well as for amateurs who want to understand the device of their electronic gadgets. The book will be of interest not only to students and specialists, but also to a wide audience, including schoolchildren who are passionate about physics and electronics. If you have ever thought about how your favorite devices work, or want to learn how to create something with your own hands, “Crystal diodes and triodes” will be a great start. The topics raised in the book go beyond a simple description of the components. Bronowitz discusses the impact of semiconductors on the development of technology, their role in the transition to the digital age and even touches on environmental issues related to the production and disposal of electronic devices. This makes the book relevant and important in the context of contemporary challenges facing humanity. Style A. C. Bronowitz can be described as clear and logical. He masterfully combines theory with practical examples, which allows the reader not only to understand, but also to see how knowledge is applied in real life. Among his other well-known works are works on radio engineering and electronics, which are also popular among students and professionals. If you are looking for a book that will not only expand your knowledge of semiconductors, but also inspire new ideas and projects, Crystal Diodes and Triodes is exactly what you need. It will become a reliable guide to the world of electronics, opening the door to new opportunities and technologies. Do not miss the chance to immerse yourself in an exciting world where science meets practice, and knowledge becomes the basis for creating the future.