Ken: What you are saying is that it is "Dip Correction" that is the problem and that I might accept as I can see how it might interfere with the free swing of the needle, something that I am certain commercial aircraft compasses have accomodated by using a more expensive design. Lets face it the number of general Aviation craft that would venture far out of their hemisphere would be few and not worth installing the more expensive compasses.
Don ------------------------------------------------------------------------ "Kenneth B. Jones" wrote: > "An interesting detail is that there are northern- and southern-hemisphere > compasses. This has to do with the fact that the magnetic field lines, to > which a compass needle aligns, point into the earth at the north and south > magnetic poles. In the northern hemisphere the north end of the needle is > pulled downwards, and the south end is counterweighted to balance the > needle." > > Now doesn't that make more sense than the the needle spinning around and > around when you cross the equator? :-) > > Ken Jones > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html
