On Tuesday 02 October 2001 3:06 pm, David Megginson wrote: > That's because Scotland's on the other side of the world from the > magnetic pole. The effects are much more pronounced in North America, > as the early European navigators discovered. North American cities > more or less directly south of the magnetic pole, like St. Louis MO, > show little or no variation (since the two poles are lined up), while > cities to the east or west do. In the Canadian far north, magnetic > headings are pretty-much worthless, so runways and approaches are > always given in true coordinates. > > > All the best, > > > David > > -- > David Megginson > [EMAIL PROTECTED]
Thanks, you do a mean tutorial. I forgot all my solid geometry about 35 years ago, but I get the picture. Am I right in imagining that all points on the great circle joining the current magnetic north "spot" and the north pole (earth rotation wise) will have zero magnetic deviation? Also, when selecting a bearing on a VOR, does the needle centre when I am on that bearing WRT true north or mag north from the station? I think this is the wrong forum, but what I really want to do depart a very northerly airport, overfly the true north pole and drop some supplies to some starving explorers up there at lat 0.00, lon *.**? How would I go about it? I would appreciate a URL on the subject, if anyone knows of one. -- Alasdair Campbell _______________________________________________ Flightgear-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/flightgear-users
