Traditional Culture Encyclopedia - The 24 Solar Terms - Will there be auroras at the north and south poles of the vernal equinox or autumn equinox solar terms?
Will there be auroras at the north and south poles of the vernal equinox or autumn equinox solar terms?
Aurora is different from extreme day. Extreme day refers to a place where there is no night for 24 hours. In the Spring and Autumn Period, there was no day and night phenomenon in the North and South Poles, that is, the length of day and night was equal, which was 12 hour. Aurora is a large-scale discharge process around the earth. Charged particles from the sun arrive near the earth, and the earth's magnetic field forces some of them to concentrate along the magnetic field lines to the North and South poles. When they enter the polar upper atmosphere, they collide and excite with atoms and molecules in the atmosphere, producing light and forming aurora. Therefore, the formation of aurora has nothing to do with solar terms, so the aurora phenomenon may also occur in the North and South poles in the Spring and Autumn Period. However, when aurora appears during the day, the intensity of sunlight is higher than the brightness of aurora, which will make human flesh invisible.
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