Why does the weather turn red?
according to the Rayleigh scattering law, the light with shorter wavelengths such as purple, blue and cyan in the solar spectrum is most easily scattered, while the light with longer wavelengths such as red, orange and yellow has strong light transmission ability. Therefore, we see that the clear sky is always blue, while the light above the horizon is only yellow, orange and red with longer wavelength. After these rays are scattered by air molecules and water vapor and other impurities, the sky there will be colorful. As the saying goes, "The morning glow does not go out, but the evening glow travels thousands of miles". That is to say, the bright red morning glow appears in the morning, indicating that there are many water drops in the atmosphere, which indicates that the weather will turn to rain. If there is a fiery red or golden sunset glow, it shows that there are no clouds in the west, and the sunlight can be transmitted to form a sunset glow, thus indicating that the weather will be fine. In the morning, the sun rises in the east. If there is too much water vapor in the atmosphere, some blue light, blue light and purple light with short wavelength in the sunlight are scattered by the atmosphere, and only red light, orange light and yellow light penetrate the atmosphere, and the sky is dyed red and orange, forming a morning glow. The appearance of hongxia means that the clouds and rain in the west will move, so "the morning glow will not go out." At night, seeing the sunset glow shows that the clouds and rain have moved to the east and the weather will turn fine, so "the sunset glow travels thousands of miles." On the horizon around sunrise and sunset, sometimes colorful clouds appear. Seeing chardonnay in the eastern sky before and after sunrise is called morning chardonnay, and the chardonnay before and after sunset is called sunset chardonnay. Haze is the result of sunlight passing through the thick atmosphere before and after sunrise and sunset and being scattered by a large number of air molecules. When there are more impurities in the air, such as dust and water vapor, its color is more obvious. If there are clouds, the clouds will also be stained with orange and red. The bright red glow before and after sunrise shows that there is already a lot of water vapor in the atmosphere, and clouds have invaded this area from the west, which indicates that the weather will turn to rain. The appearance of a big red and golden sunset indicates that the weather has cleared or the clouds have split in the upper reaches of our west, and the sunshine can penetrate to cause the sunset, indicating that the rain clouds hanging over the local area are about to move eastward and the weather will clear up. Why is the sunset glow red? In the morning and evening, colorful clouds often appear on the horizon before and after sunrise and sunset. The formation of morning glow and sunset glow is due to the scattering of light by air. When sunlight enters the atmosphere, it will scatter when it meets atmospheric molecules and particles suspended in the atmosphere. These atmospheric molecules and particles themselves do not emit light, but because they scatter sunlight, each atmospheric molecule forms a scattered light source. According to the Rayleigh scattering law, the light with shorter wavelengths such as purple, blue and cyan in the solar spectrum is the easiest to scatter, while the light with longer wavelengths such as red, orange and yellow has strong light transmission ability. Therefore, we see that the clear sky is always blue, while the light above the horizon is only yellow, orange and red with longer wavelength. After these rays are scattered by air molecules and water vapor and other impurities, the sky there will be colorful.