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    Magnetic Declination etc.
    From: Frank Reed CT
    Date: 2004 Feb 12, 17:50 EST
    Bear in mind that there are SEVERAL competing, similar terms like "declination" and "variation" for the difference between true north and magnetic north. It's always best to say what you mean when you write about this material, and there's no point being too pedantic about which one is "right".

    And now for something really fun:
    http://clockwk.com/geomag.html

    You can "play" the magnetic field through time watching the declination slipping and sliding around the globe over the course of four centuries. This animation is from the USGS web site, enlarged slightly for my own amusement. Note that you need Flash installed on your web browser to make it go.

    Frank E. Reed
    [X] Mystic, Connecticut
    [ ] Chicago, Illinois

       
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