The familiar ring around the moon is an example of an atmospheric halo, which is a signature of ice crystals in the air, though the focus here is on odd radius halos. The shape of the ice crystals responsible is only just becoming understood, and is determined by angle x, which has yet to be identified. Tape and Moilanen (their affiliations are not stated), discuss the phenomenon and its possible causes. Some of the material is accessible to lay readers with some scientific background, and some requires college-level mathematics. One of their goals is to encourage the former to notice atmospheric halos--for example different sized ones around the sun--and to marvel at the mystery they present as well as their beauty. Annotation :2006 Book News, Inc., Portland, OR (booknews.com).

Very Good,No Highlights or Markup,all pages are intact.

We live in a world of optical marvels - from the commonplace but beautiful rainbow, to the rare and eerie superior mirage. But how many of us really understand how a rainbow is formed, why the setting sun is red and flattened, or even why the sky at night is not absolutely black? This beautiful and informative guide provides clear explanations to all naturally occurring optical phenomena seen with the naked eye, including shadows, halos, water optics, mirages and a host of other spectacles. Separating myth from reality, it outlines the basic principles involved, and supports them with many figures and references. A wealth of rare and spectacular photographs, many in full color, illustrate the phenomena throughout. In this new edition of the highly-acclaimed guide to seeing, photographing and understanding nature's optical delights, the authors have added over 50 new images and provided new material on experiments you can try yourself.

Publisher description

A 24-hour practical guide to skywatching.

America has one of the most varied and dynamic weather systems in the world. Every year, the Gulf Coast is battered by hurricanes, the Great Plains are ravaged by tornados, the Midwest is pummeled by blizzards, and the temperature in the Southwest reaches a sweltering 120 degrees. Extreme weather can be a matter of life and death, but even when it is pleasant—72 degrees and sunny—weather is still central to the lives of all Americans. Indeed, it’s hard to imagine a topic of greater collective interest. Whether we want to know if we should close the storm shutters or just carry an umbrella to work, we turn to forecasts. But few of us really understand the science behind them. All that changes with The AMS Weather Book. The most comprehensive and up-to-date guide to our weather and our atmosphere, it is the ultimate resource for anyone who wants to understand how hurricanes form, why tornados twirl, or even why the sky is cerulean blue. Written by esteemed science journalist and former USA Today weather editor Jack Williams, The AMS Weather Book covers everything from daily weather patterns to air pollution and global warming and explores the stories of people coping with severe weather and those who devote their lives to understanding the atmosphere, oceans, and climate. Words alone, of course, are not adequate to explain many meteorological concepts, so The AMS Weather Book is filled with engaging full-color graphics that explain such concepts as why winds blow in a particular direction, how Doppler weather radar works, what happens inside hurricanes, how clouds create wind and snow, and what’s really affecting the earth’s climate. For Weather Channel junkies, amateur meteorologists, and storm chasers alike, The AMS Weather Book is an invaluable tool for anyone who wants to better understand how weather works and how it affects our lives.

What do you need to know to prosper for 65,000 years or more? The First Knowledges series provides a deeper understanding of the expertise and ingenuity of Indigenous Australians. Aboriginal and Torres Strait Islander people are the oldest scientists in human history. Many First Peoples regard the land as a reflection of the sky and the sky a reflection of the land. Sophisticated astronomical expertise embedded within the Dreaming and Songlines is interwoven into a deep understanding of changes on the land, such as weather patterns and seasonal shifts, that are integral to knowledges of time, food availability, and ceremony. In Astronomy: Sky Country, Karlie Noon and Krystal De Napoli explore the connections between Aboriginal environmental and cultural practices and the behaviour of the stars, and consider what must be done to sustain our dark skies, and the information they hold, into the future.

The ultimate guide to the final frontier This alphabetical tour of the universe provides all the history, science, and up-to-the-minute facts needed to explore the skies with authority. Packed with more than 3,000 entries that cover everything from major observatories and space telescopes to biographies of astronomers throughout the ages, it showcases an extraordinary array of newfound wonders, including microquasars, brown dwarfs, and dark energy, as well as a host of individual comets, asteroids, moons, planets, stars, nebulas, and galaxies. Featuring nearly 200 illustrations and eight pages of color photographs, this comprehensive guide provides easy lookup of topics and offers more in-depth information than can be found in existing star guides or astronomy dictionaries. It's an ideal resource for the amateur astronomer or anyone with an interest in the mysteries of the cosmos. David Darling, PhD (Brainerd, MN), is the author of The Complete Book of Spaceflight and Equations of Eternity, a New York Times Notable Book.