
Best Ergonomic Office Chairs for Long Hours at the Desk (2025 Guide)
Discover the top ergonomic office chairs for ultimate comfort during long hours at your desk. Boost your productivity an...
Designed as a training manual for Navy personnel (Opticalman 3 & 2), this book provides thorough coverage of the basic theory of optics and its applications. Newly revised and updated, it presents the subject matter with extraordinary clarity, stressing theory and application ...Designed as a training manual for Navy personnel (Opticalman 3 & 2), this book provides thorough coverage of the basic theory of optics and its applications. Newly revised and updated, it presents the subject matter with extraordinary clarity, stressing theory and application equally.
It will serve admirably to supplement a course in which only one of these factors is emphasized.The book begins with an introduction to the Opticalman rating. It then goes on to discuss the characteristics of light, with special emphasis on wavelengths, reflection, and refraction. Two chapters contain a detailed discussion of the formation of images by mirrors, lenses, and prisms; these explain how images are formed by thin and thick lenses, how to use the lens formula, and how to determine the location of an image formed by an optical instrument.
A helpful four-part appendix includes a glossary, common formulae used in optical repair and machine operations, prefixes and symbols used in the metric system, and English and metric system units of measurement, with common equivalents and conversions. Profusely illustrated with 370 charts, diagrams, photographs, and drawings of tools and parts of instruments — including cross-sections that reveal inner workings — this manual is especially clear and well-organized. Although designed for use in U.S.
Naval training schools, it can be used to great advantage as a basic text in optics in standard technical schools, and it will be immensely valuable even to the layman who desires a knowledge of the fundamentals of optics.
Discover more insights and guides in this category

Discover the top ergonomic office chairs for ultimate comfort during long hours at your desk. Boost your productivity an...

Discover the must-have kitchen gadgets for every home cook in 2025. Elevate your culinary skills and simplify meal prep ...

Discover the best noise-cancelling headphones that enhance focus and comfort for work and travel. Elevate your listening...