"Fall in Earth's Magnetic Field Is Erratic," published in the journal Science. The goal is to measure changes in Earth's magnetic field, generated by churning currents of molten iron that lie more than 3,000 miles below the surface.
The Rigorous Study of the Ancient Mariners
Measuring changes in the Earth's magnetic field.
Aug 14, 2006 5:00 AMNov 12, 2019 6:27 AM
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