Why does the globe tilt 23.5 degrees?

Because in space, the earth axis is not perpendicular to the horizontal plane. The globe will tilt because of the attitude of the actual earth when it rotates and revolves.

Because there is a Huang Chi angle between the orbital plane of the earth's revolution-the ecliptic plane and the orbital plane of the earth's rotation-the equatorial plane, which is 23.5 degrees, that is, the latitude of the Tropic of Cancer; When the earth rotates, it turns obliquely, and the northern end of the earth axis points to Polaris. So the globe is made according to the actual posture of the earth when it rotates and revolves.

Extended data:

In order to understand the earth more easily, people imitated the shape of the earth and made a model instrument of the earth-a globe. There is no deformation of length, area, direction and shape on the globe, so it is almost correct to observe the relationship between various scenes from the globe.

In fact, the earliest tool people used to record the route was a map, but at that time people had limited knowledge and could not accurately express the three-dimensional sense of space; So someone put forward to draw the areas that are difficult to draw by projection, so there was the earliest method in the world-Mercator projection method, and then the German navigator Behaim made the map return to the circular surface, and later Crates made the world's first globe.

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