Geographic North (True north 真北) vs Magnetic north (磁北) 地理学意义上的北指的是北极点,the North Pole,指南针上的北指的是加拿大埃尔斯米尔岛上的一个点(a point on Ellesmere Island in Northern Canada),两者之间有大约500公...
True North is a fixed point on the globe represented by the north pole. Magnetic north, on the other hand, is the direction that the needle of a compass points to based on the earth’s magnetic field. And the difference is what is calledmagnetic declinationwhich comes due to the change ...
1851: The magnetic north pole is discovered. [source: Geological Survey of Canada] Read More Finding True North With the Sun You can use your watch to find true north. HowStuffWorks If you're lost during the day somewhere without a map, compass or GPS handy, the best method to find...
. 1998 . Orientation of snow buntings ( Plectrophenax nivalis ) close to the magnetic north pole . J. Exp. Biol . 201 : 1859 – 1870 .Sandberg R., Backman J., Ottoson U., 1998. Orientation of Snow Buntings (Plectrophenax nivalis) close to the North Pole. The Journal of ...
Truls Lynne HansenDepartment of HistoryUniversity of TromsøCentaurusAspaas, P.P. & Lynne Hansen, T. (2007). Geomagnetism by the North Pole, anno 1769: The Magnetic Observations of Maximilian Hell during his Venus Transit Expedition, Centaurus 49, pp. 138-164....
但指南针指的“北”并不是true north,这里面有一个地理学概念: Geographic North (True north 真北) vs Magnetic north (磁北) 地理学意义上的北指的是北极点,the North Pole,指南针上的北指的是加拿大埃尔斯米尔岛上的一个点(a point on Ellesmere Island in ...
true north n (direction of North Pole) (地理上的北极,非磁极之北) SC 正北方,真北方 zhèng běi fāng,zhēn běi fāng True north is not the same as magnetic north. true north adv (in the direction of North Pole) SC 正北方 zhèng běi fāng SC 在真北方 zhèng běi fāng,zài zhēn...
A precisely dated Proterozoic palaeomagnetic pole from the North China craton, and its relevance to palaeocontinental reconstruction. Geophys. J. Int. 143, 185-203.Halls HC,Li JH,Davis D et al.A precisely dated Proterozoic palaeomagnetic pole from the North China Craton,and its relevance to ...