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Geomagnetism covers questions related to the Earth’s magnetic field, its origin, history and measurement. Use electromagnetism for more general questions on magnetism.

76 votes
3 answers
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Why don't the Earth's oceans generate a magnetic field?

Many questions have been asked here about why the Earth has a magnetic field, e.g., What is the source of Earth's magnetic field? How does Earth's interior dynamo work? How can an electrically neut …
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