Description: This map is a magnetic chart of the earth. From this map, we can see that the magnetic poles differ from the geographic poles. In order to properly read a compass, variations in the location of magnetic north from the observerŐs current location must be taken into consideration.
Source: William H. Brewer Ph.,D., Warren's New Physical Geography (Philadelphia, PA: Cowperthwait and Company, 1890) 26
Map Credit: Courtesy the private collection of Roy Winkelman. |
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