Fortune Telling Collection - Zodiac Analysis - The difference between geographical North Pole and geomagnetic North Pole

The difference between geographical North Pole and geomagnetic North Pole

Difference 1. Different positions

The geomagnetic north pole of the earth is inconsistent with that of the earth, and there is an included angle of1130'.

Difference two. Move in different positions.

The geomagnetic north pole changes with time;

The North Pole refers to the northern end of the earth's rotation axis, that is, the point of 90 north latitude, which does not change with time.

Difference three. Different R&D backgrounds

Geomagnetic North Pole: 19 In the 1920s, the famous German mathematician K.F. Gauss published a theory about the earth's magnetic field, which regarded the earth as a sphere with uniform magnetic field strength and mathematically deduced the magnetic poles.

Arctic: The Arctic Circle was first defined by the ancient Greeks. They found that the stars in the sky can be divided into two groups. One group is in the north of the world and can be seen all year round. The other group is near the zenith and the south, and they only appear periodically with the seasons.

The dividing line between the two groups of stars is the circle drawn by Ursa Major, which happens to be the latitude circle of 66 33' north latitude, that is, the Arctic Circle.

Extended data:

The origin of the Arctic name:

As you go farther north from the equator, you will find the stars in the sky hanging higher and higher above your head. Until you find the largest constellation in the northern hemisphere-Ursa Major (called the Big Dipper in China) hanging above your head, your position is the North Pole.

Therefore, when the ancient Greeks said the North, they were always associated with the bear-Aktos. The name of the North Pole "North Pole" means "where the bear stands overhead".

North Pole: Northrend. In the trailer of WLK, we know that a continent appeared above the original Azeroth continent and the Eastern Kingdom. According to geographical common sense, it should be the north, and that continent is covered with ice and snow, so that's how the North Pole came from!

Baidu encyclopedia-geomagnetic north pole

Baidu Encyclopedia-Arctic