Traditional Culture Encyclopedia - Weather inquiry - Under what circumstances is the sunset likely to appear? Under what circumstances is the sunset likely to appear?
Under what circumstances is the sunset likely to appear? Under what circumstances is the sunset likely to appear?
1. Sunset glow is easy to appear in the morning and evening. The formation of morning glow and sunset glow is due to the scattering of light by air. When sunlight enters the atmosphere, it is scattered when it encounters 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.
2. According to Rayleigh’s law of scattering, the shorter wavelengths of purple, blue, cyan and other colors of light in the solar spectrum are most easily scattered, while the longer wavelengths of red, orange, yellow and other colors are the most easily scattered. The light transmission ability is very strong. Therefore, we see that the bright sky is always blue, and the light above the horizon is only yellow, orange, and red light with longer wavelengths. After these rays are scattered by impurities such as air molecules and water vapor, the sky there takes on brilliant colors. As the saying goes, the morning glow can travel thousands of miles, but the sunset glow travels thousands of miles. This means that the bright red glow in the morning indicates that there are already a lot of water droplets in the atmosphere, indicating that the weather will turn rainy. If there is a fiery red or golden sunset glow, it means that there are no clouds in the west, and the sunlight can penetrate through to form the sunset glow, so it indicates that the weather will become fine.
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