How does geography distinguish whether there is a polar day phenomenon?

Answer 1

To distinguish whether a region had a polar day phenomenon, one could rely on the following geographical knowledge: polar days would occur in the polar regions of the Earth. In terms of latitude, the Arctic Circle (66.5° N) and its north, and the Antarctic Circle (66.5° S) and its south would have polar days and polar nights. The polar regions of the hemisphere in which the sun was shining directly could be considered as polar regions. Specifically, after the vernal equinox, polar day appeared near the North Pole, reaching its maximum on the summer solstice, and the border reached the Arctic Circle. After the autumnal equinox, polar day appeared near the South Pole, reaching its maximum on the winter solstice, and the border reached the Antarctic Circle. However, due to the refraction of the sun, the range of the polar day in summer may exceed the Arctic Circle (or the Antarctic Circle). In addition, the range of the polar day was related to the latitude of the sun's direct point. The latitude difference between the pole and the boundary was the latitude of the sun's direct point. If the latitude of a region was not within the above range, then there would usually be no polar day phenomenon.

In English, it was as follows:
To distinguish whether an area has the phenomenon of polar day or not, the following geographical knowledge can be relied on. The polar day phenomenon occurs in the polar regions of the earth. From the perspective of latitude, the areas at and north of the Arctic Circle (66.5°N) and at and south of the Antarctic Circle (66.5°S) will have the phenomena of polar day and polar night. In which hemisphere the sun's direct point is, the polar area of that hemisphere may have the polar day phenomenon. Specifically, after the vernal equinox, the polar day appears near the Arctic, reaching its maximum by the summer solstice when the boundary reaches the Arctic Circle; after the autumnal equinox, the polar day appears near the Antarctic, reaching its maximum by the winter solstice when the boundary reaches the Antarctic Circle. However, due to solar refraction, the range of the polar day in summer may exceed the Arctic Circle (or Antarctic Circle). In addition, the range of the polar day is related to the latitude of the sun's direct point, and the latitude difference between the pole and the boundary is the latitude of the sun's direct point. If the latitude of an area is not within the above range, then generally there will be no polar day phenomenon.
Read more exciting novels for free