PDF/EPUB North Pole South Pole PDF/EPUB Ë North Pole PDF \ ✓ construyamos.co

Why do compass needles point north—but not quite north? What guides the migration of birds whales and fish across the world’s oceans? How is Earth able to sustain life under an onslaught of solar wind and cosmic radiation? For centuries the world’s great scientists have grappled with these questions all rooted in the same phenomenon—Earth’s magnetismOver 2000 years after the invention of the compass Einstein called the source of Earth’s magnetic field one of greatest unsolved mysteries of physics Here for the first time is the complete history of the quest to understand Earth’s magnetism—from the ancient Greeks’ fascination with lodestone to the geological discovery that the North Pole has not always been in the North—and to the astonishing modern conclusions that finally revealed the true sourceRichly 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’s core


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    A kind of book I love which takes a body of knowledge that most of us experience as a bare statement of fact in our education the Earth has a magnetic field that explains how compasses work and protects from radiation from outer space and by the way it has flipped end for end multiple times in the distant past and lays out a detailed history of how we learned about it and how much we have left to learn Enlightening and entertaining