Hodgson, Magdalena (2012) The magnetic field of the earth (concepts & elements). College Publishing House, Delhi, India. ISBN 978-81-323-1083-9
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Abstract
Earth's magnetic field (and the surface magnetic field) is approximately a magnetic dipole, with the magnetic field South pole near the Earth's geographic north pole and the other magnetic field N pole near the Earth's geographic south pole. This makes the compass usable for navigation. The cause of the field can be explained by dynamo theory. A magnetic field extends infinitely, though it weakens with distance from its source. The Earth's magnetic field, also called the geomagnetic field, which effectively extends several tens of thousands of kilometres into space, forms the Earth's magnetosphere. A paleomagnetic study of Australian red dacite and pillow basalt has estimated the magnetic field to be at least 3.5 billion years old.
| Item Type: | Book |
|---|---|
| Subjects: | Q Science > QB Astronomy |
| Divisions: | Electronic Books |
| Depositing User: | Practical Student 02 |
| Date Deposited: | 21 Oct 2021 04:40 |
| Last Modified: | 24 May 2022 07:13 |
| URI: | http://odlsystem2.utm.my/id/eprint/2485 |
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