A Concise Guide to Collecting and Restoring Vintage Binoculars (Third Edtion)


Book Description

A Concise Guide to Collecting and Restoring Vintage Binoculars (Third Edition) is a short, introductory guide that should be particularly suitable for beginners who would like to build a collection of vintage or previously owned binoculars and would like advice on how to carry out servicing and restoration tasks at home.




The Backyard Astronomer's Guide


Book Description

The touchstone for contemporary stargazers. This classic, groundbreaking guide has been the go-to field guide for both beginning and experienced amateur astronomers for nearly 30 years. The fourth edition brings Terence Dickinson and Alan Dyer's invaluable manual completely up-to-date. Setting a new standard for astronomy guides, it will serve as the touchstone for the next generation of stargazers as well as longtime devotees. Technology and astronomical understanding are evolving at a breathtaking clip, and to reflect the latest information about observing techniques and equipment, this massively revised and expanded edition has been completely rebuilt (an additional 48 pages brings the page count to 416). Illustrated throughout with all-new photographs and star charts, this edition boasts a refreshed design and features five brand-new chapters, including three essential essays on binocular, telescope and Moon tours by renowned astronomy writer Ken Hewitt-White. With new content on naked-eye sky sights, LED lighting technology, WiFi-enabled telescopes and the latest advances in binoculars, telescopes and other astronomical gear, the fourth edition of The Backyard Astronomer's Guide is sure to become an indispensable reference for all levels of stargazers. New techniques for observing the Sun, the Moon and solar and lunar eclipses are an especially timely addition, given the upcoming solar eclipses in 2023 and 2024. Rounding out these impressive offerings are new sections on dark sky reserves, astro-tourism, modern astrophotography and cellphone astrophotography, making this book an enduring must-have guide for anyone looking to improve his or her astronomical viewing experience. The Backyard Astronomer's Guide also features a foreword by Dr. Sara Seager, a Canadian-American astrophysicist and planetary scientist at the Massachusetts Institute of Technology and an internationally recognized expert in the search for exoplanets.




Restoring Tropical Forests


Book Description

Restoring Tropical Forests is a user-friendly guide to restoring forests throughout the tropics. Based on the concepts, knowledge and innovative techniques developed at Chiang Mai University's Forest Restoration Research Unit, this book will enable improvements in existing forest restoration projects and provide a key resource for new ones. The book presents three aspects of the restoration of tropical forest ecosystems: the concepts of tropical forest dynamics and regeneration that are relevant to tropical forest restoration, proven restoration techniques and case studies of their successful application, and research methods to refine such techniques and adapt them to local ecological and socio-economic conditions.




English Mechanics


Book Description










Opticalman 3 & 2


Book Description

Theories and practical skills for use in optical shops are presented in this rate training manual, prepared for regular navy and naval reserve personnel. Light theories are analyzed in connection with mirrors, prisms, lenses, and basic optical systems. Following fundamentals of mechanical design and construction, maintenance procedures are studied to give a general knowledge of optical repair. Special descriptions are made of such instruments as spyglasses, telescopes, magnetic compasses, azimuth and bearing circles, sextants, stadimeters, telescopic alidades, binoculars, submarine periscopes, and night vision sights. To give enough background for readers, operations of lathes, grinders, milling machines, and drill presses are also discussed. Besides illustrations for explanation purposes, information on the opticalman rating structure is also provided.




Waiting for a Warbler


Book Description

Short listed for the Green Earth book award In early April, as Owen and his sister search the hickories, oaks, and dogwoods for returning birds, a huge group of birds leaves the misty mountain slopes of the Yucatan peninsula for the 600-mile flight across the Gulf of Mexico to their summer nesting grounds. One of them is a Cerulean warbler. He will lose more than half his body weight even if the journey goes well. Aloft over the vast ocean, the birds encourage each other with squeaky chirps that say, “We are still alive. We can do this.” Owen’s family watches televised reports of a great storm over the Gulf of Mexico, fearing what it may mean for migrating songbirds. In alternating spreads, we wait and hope with Owen, then struggle through the storm with the warbler. This moving story with its hopeful ending appeals to us to preserve the things we love. The backmatter includes a North American bird migration map, birding information for kids, and guidance for how native plantings can transform yards into bird and wildlife habitat.




Assessing Language Production Using Salt Software


Book Description

ASSESSING LANGUAGE PRODUCTION USING SALT SOFTWARE: A Clinician's Guide to Language Sample Analysis - 3rd Edition




A Field Guide to Medicinal Plants and Herbs of Eastern and Central North America


Book Description

At a time when interest in herbs and natural medicine has never been higher, the second edition of this essential guide shows how to identify more than 500 healing plants. 300+ color photos.




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