By Neil Davis
Do iceworms consume ice? are you able to pay attention the aurora? How does mosquito repellent work? Why are Alaskan volcanoes frivolously spaced alongside the coast? Is it attainable for decent water to freeze quicker than chilly water? the place are Alaska's greater than a hundred twenty five sizzling springs? Why are northern twilights so long? Do glaciers slide or do they flow? Why do snowflakes flutter as they fall? In Alaska technological know-how Nuggets, Neil Davis solutions those and lots of different exciting questions within the interesting and informative kind that makes him certainly one of Alaska's favourite technology writers. This compendium of approximately four hundred articles, together with articles by way of different members to a technology column carried through quite a few Alaska newspapers, discusses phenomena as various because the northern lighting fixtures, permafrost, glaciers, meteorology, volcanoes, earthquakes, archaeology, Alaskan vegetation, mammoths, early people, and northern living. Tourists and long-time Alaskans alike have made this much-loved publication a bestseller for years. Alaska technology Nuggets is a smart reference or present for someone attracted to the outstanding typical historical past of the North.
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Extra info for Alaska Science Nuggets (Natural History)
Articles written by other contributors are followed by the authors' names. The month and year of initial publication appears at the end of each article together with a keying number that ties to a filing system wherein reference materials are retained. I am most grateful to the 36 others whose contributions have broadened the scope of the series. Also, I gratefully acknowledge the many members of the faculty of the University of Alaska and other professionals whom I have consulted to obtain accurate information during the preparation of articles.
Thus even when you get cold or tired and go in, it will continue to play on in your absence. Oct 81:509 Photographing the Aurora The aurora is one of nature's most beautiful dramas. Played against a cosmic backdrop, the colors and motions are often subtle and quick, but such a show is not difficult to photograph if strict attention is paid to certain procedures which are peculiar to auroral photography. First, find someplace where you have a clear view of the sky and horizon, away from streetlights.
The Alaska Humanities Forum provided initial funding. Later, both the National Science Foundation and the Geophysical Institute supported the work. The many people who wrote letters and orally communicated suggestions and questions have made substantial contribution to what appears in this volume. Finally, I wish to thank the Director of the Geophysical Institute, Dr. Juan G. Roederer, and the Institute's Assistant Director, Professor Albert E. Belon, for their encouragement and support. NEIL DAVIS Page v Contents Chapter One Auroras And Related Things Names and Definitions of the Aurora 1 The Solar Wind 1 The Earth's Magnetosphere 2 Energy Source for the Aurora 2 Decline of the Aurora 3 A False Solar Alarm 3 Jupiter's Red SpotThe Auroral Connection 4 Predicting Auroras 4 Hints for Aurora Watching 5 Photographing the Aurora 5 Divining the Aurora 5 Magnetic Storms 6 Magnetic Substorms 6 Auroral Electrojets 7 The Continuous Aurora 7 The Transient Aurora 7 The Auroral Oval 8 The Auroral Arc 8 Auroral Rays 9 Auroral Arcs and Bands 9 Spirals 11 More on Spirals 12 Flickering Aurora 12 Pulsating Aurora 12 Black Aurora 13 Aurora in Eskimo Legend 14 Conjugate Aurora 14 Alaska's Auroras the Best?