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Magnetic North


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I am always amazed at the things Geocaching leads me to look into further. On the subject of magnets, compasses, North vs Magnetic North, pole reversal, the structure of the Earth, check out this link and follow the great links at the bottom of the picture. Some very cool ideas, I would think, for instuctional topics, and how one subject relates to another.

http://antwrp.gsfc.nasa.gov/apod/ap020818.html

 

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"See the wonderous works of Providence! The uncertainty of human things!" Geo.Washington

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