File:Magnetic Poles Movement.gif
Magnetic_Poles_Movement.gif (538 × 312 pixels, file size: 39 KB, MIME type: image/gif)
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Date/Time | Dimensions | User | Comment | |
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current | 10:47, 17 March 2007 | 538 × 312 (39 KB) | DMY | Variations in the Earth's Magnetic Field [http://nationalatlas.gov/articles/geology/a_geomag.html#four] Courtesy of John Hillhouse, USGS The intensity and structure of the Earth's magnetic field are always changing, slowly but erratically, reflecting t |
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