The book "Applied Optics" by O. In. Grasshopper is a fascinating and in-depth study in the world of optics, which will be a real discovery for both students and professionals in the field of physics and engineering. This work is not just a textbook, but a whole universe in which the author masterfully combines theory and practice, allowing the reader not only to understand the basics of applied optics, but also to see how this knowledge is applied in real life. In Applied Optics, Grasshopper touches on a wide range of topics, ranging from the basics of light phenomena to complex optical systems. The book covers key aspects such as refraction and reflection of light, optical instruments, lasers and their applications, as well as the latest technologies in the field of optics. Each section is written with clarity and accessibility, which makes the material understandable even for those who are just starting their way in this science. This book will be of interest not only to students of physics and engineering, but also to everyone who is fond of science and technology. It will be a useful resource for teachers, researchers and practitioners who want to deepen their knowledge in the field of optics. If you are looking for literature that will help you understand complex concepts and put them into practice, Applied Optics is exactly what you need. The topics raised in the book go beyond the mere study of physical phenomena. Grasshopper focuses on the importance of optics in today's world, where technology is developing at an incredible rate. It shows how optical systems affect different areas of life from medicine to telecommunications, from science to art. The reader will be able to see how optics permeates our daily lives, and this makes the book especially relevant. Style O. In. Grasshopper is distinguished by clarity and consistency of presentation, which makes it easy to digest even the most complex topics. His approach to learning is based on the principle that knowledge should be accessible and interesting. In Applied Optics, the author uses many examples and illustrations, which makes the learning process not only effective, but also fascinating. Grasshopper is also known for his other works, such as "Fundamentals of Physics" and "Modern Technology in Science", which have also been recognized for their accessibility and informativeness. The book "Applied Optics" is not just a textbook, but a real find for anyone who wants to deepen their knowledge in the field of optics and understand how this knowledge can be applied in real life. It will be an excellent addition to the library of everyone who is interested in science, technology and their interaction with the outside world. If you are looking for quality and meaningful literature on applied optics, this book definitely deserves your attention.