Free Download Atmospheric Halos and the Search for Angle X By Walter Tape, Jarmo Moilanen(auth.)
2006 | 236 Pages | ISBN: 087590727X | PDF | 51 MB
Published by the American Geophysical Union as part of the Special Publications Series.Atmospheric halos are visible phenomena of much beauty and fascination. From our earliest known records, dating from the Sumerian-Babylonian culture of 4-5,000 years ago, to modern researchers, halos have kept us looking skyward. Caused by light refracted through ice crystals floating in the atmosphere, they can appear at nearly any time and place. What do the ice crystals look like, especially those that make the exotic "odd radius" halos? What is the value of the elusive angle x, so critical to determining the shapes of these crystals? What halo displays do we understand well and what displays do we not understand at all?This book responds to such questions, and more, with a multifaceted view of halo science. Experts and novices alike will find this book the definitive resource on the subject. Features include:The "how to" in halo observation and photographyCarefully analyzed photos of rare halo displays and pyramidal ice crystalsThe early history of halo scienceElegant new explanations of how halos formAuthoritative discussion of odd radius halosWe invite you to gaze up and discover the world of halos.Content: Chapter 1 Introduction (pages 1-8): Chapter 2 Ice Crystal Gallery (pages 9-20): Chapter 3 The Beginnings of Halo Science (pages 21-32): Chapter 4 How Halos Form (pages 33-42): Chapter 5 Halo Simulations (pages 43-50): Chapter 6 Halos From Prismatic Crystals (pages 51-64): Chapter 7 Odd Radius Halos are Real (pages 65-70): Chapter 8 Odd Radius Circular Halos (pages 71-89): Chapter 9 Some Crystallography (pages 91-100): Chapter 10 Pyramidal Ice Crystals (pages 101-112): Chapter 11 The Search for Angle x (pages 113-128): Chapter 12 Refraction Halos and Wedge Angle (pages 129-132): Chapter 13 The Spin Vector (pages 133-136): Chapter 14 A User's Guide to Halo Poles (pages 137-144): Chapter 15 Odd Radius Plate Arcs (pages 145-164): Chapter 16 Odd Radius Column Arcs (pages 165-178): Chapter 17 Odd Radius Parry Arcs (pages 179-182): Chapter 18 Other Wedge Angles? (pages 183-194):
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