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North Pole, South Pole traces an enduring question through its rich history of great thinkers, superstition, and controversy#xE2;#xAC;#x1D; right up to today#xE2;#xAC;"s startling conclusions Why do compass needles point north#xE2;#xAC;#x1D;but not quite north? What guides the migration of birds, whales, and fish across the world#xE2;#xAC;"s oceans? How is Earth able to sustain life under an onslaught of solar wind and cosmic radiation? For centuries, the world#xE2;#xAC;"s great scientific minds have grappled with these questions, all rooted in the same phenomenon#xE2;#xAC;#x1D;Earth#xE2;#xAC;"s magnetism. Over 2,000 years after the invention of the compass, Einstein called the source of Earth#xE2;#xAC;"s magnetic field one of the greatest unsolved mysteries of physics. Here, for the first time, is the complete story of the quest to understand Earth#xE2;#xAC;"s magnetism#xE2;#xAC;#x1D;from the ancient Greeks#xE2;#xAC;" fascination with lodestone, to the discovery that the North Pole has not always been in the North#xE2;#xAC;#x1D;and to the astonishing modern conclusions that finally revealed the true source. Richly illustrated and skillfully told, North Pole, South Pole unfolds the human story behind the science: that of the inquisitive, persevering, and often dissenting thinkers who unlocked the secrets at our planet#xE2;#xAC;"s core.
Gillian Turner is a senior lecturer in physics and geophysics at Victoria University in Wellington, New Zealand. The winner of numerous awards for excellence in teaching and science communication, Turner has published over fifty articles in scientific journals. This is her first book.
Table of Contents
|Main Characters||p. xii|
|The Mystery of Magnetism||p. 5|
|Voyages of Discovery||p. 20|
|Magnus Magnes||p. 32|
|The Wandering Compass Needle||p. 48|
|Measuring the Force||p. 63|
|Of Forces and Fields||p. 78|
|The Third Element||p. 101|
|The Magnetic Crusade||p. 114|
|The Core of the Matter||p. 130|
|Reading the Rocks||p. 151|
|Poles Flipped, Continents Adrift||p. 167|
|The Story on the Seafloor||p. 185|
|Unraveling the Record||p. 195|
|In Search of a Solution||p. 213|
|The Geodynamo||p. 224|
|Select Bibliography||p. 257|
|Illustration Credits||p. 259|
|About the Author||p. 272|
|Table of Contents provided by Ingram. All Rights Reserved.|