North magnetic pole | 合法醫療器材資訊網
ThenorthmagneticpoleisapointonthesurfaceofEarth'sNorthernHemisphereatwhichtheplanet'smagneticfieldpointsverticallydownwards(inotherwords ...
Earths magnetic pole in the Northern Hemisphere
Location of the north magnetic pole and the north geomagnetic pole in 2017.[1] The magnetic-north of the earth as a magnet is actually on the southern hemisphere: The north side of magnets are by definition attracted to the geographic north, and opposite poles attract.The north magnetic pole, also known as the magnetic north pole, is a point on the surface of Earths Northern Hemisphere at which the planets magnetic field points vertically downward (in other words, if a magnetic compass needle is allowed to rotate in three dimensions, it will point straight down). There is only one location where this occurs, near (but distinct from) the geographic north pole. The geomagnetic north pole is the northern antipodal pole of an ideal dipole model of the Earths magnetic field, which is the most closely fitting model of Earths ac...
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