Why is the sunset glow before the typhoon beautiful? What is the reason for the color formation of the morning glow and the evening glow?

Why is the sunset before the typhoon so beautiful?

The sunset before the wind is beautiful because the light and shadow in the sky before the typhoon are unpredictable, and the scenery will have many unexpected color effects under the action of light. Sunset means that colorful clouds appear on the horizon before and after sunset in the evening. In the morning and evening, there are often colorful clouds in the sky before and after sunrise and sunset. The formation of morning light and sunset glow is due to the scattering of light by air. When sunlight enters the atmosphere, it encounters atmospheric molecules and particles suspended in the atmosphere and scatters. These atmospheric molecules and particles themselves do not emit light, but because they scatter sunlight, and each atmospheric molecule forms a scattered light source.

? Sunlight is divided into ultraviolet rays (5%), infrared rays (43%) and visible light (52%). There are many colors in summer because sunlight is scattered into monochromatic light through clouds, dust and water vapor, which is equivalent to the role of a prism. "Red, orange, yellow, green, blue, indigo and purple" are arranged according to the wavelength from long to short. Red light has the longest wavelength and the longest penetration distance. Automobile taillights are designed as red lights according to this principle. Better as a warning. "Red, orange and yellow" tricolor light with longer wavelength has less loss and longer penetration distance in the scattering process, forming the main color of Xia.

? Precautions for typhoon safety indoors: Strong wind will blow down high-altitude objects, which may easily cause casualties. Therefore, before the typhoon strikes, it is necessary to fix sporadic items such as flower pots, outdoor units of air conditioners and awnings to ensure safety. Check whether the doors and windows are closed and loose. If possible, add a cross bolt behind the doors and windows. In addition, don't move near the windward window and don't remove valuables from the windward window. Typhoon may lead to water and electricity cuts, so we should make preparations for our daily life in time. Check the wiring, prepare flashlights and candles, and store drinking water to prevent power failure and water supply; Prepare food and vegetables for more than a day or two, and don't go out unless necessary. Outdoor: Try not to go out when the wind blows. Be sure to go out, be sure to wear eye-catching clothes, bend down and walk slowly, try to grasp the fixed objects such as railings, and bend down and walk slowly when crossing the bridge or walking high; When walking in the street, you should pay special attention to objects falling from a height. Don't take shelter from the wind and rain in dangerous houses, shacks, temporary buildings, scaffolding, telephone poles, trees, billboards, iron towers and other places that are prone to casualties. At the same time, you should not be near iron towers, transformers, metal sheds, etc., and you should not stay under trees or near railway tracks. If you see the ground wire after the typhoon, please don't go near it. You can post warning signs first and then call the power hotline for warranty.