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Old 2008-09-10, 06:07   #35
cheesehead
 
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"Richard B. Woods"
Aug 2002
Wisconsin USA

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Quote:
Originally Posted by xilman View Post
the North and South poles lie on the earth's rotation axis. That fully fixes the coordinate system.
... depending on one's required degree of accuracy ...

http://en.wikipedia.org/wiki/Image:P..._2001_2005.png
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