Everyone has a love of beauty. Whether ancient or modern, colorful rainbows are very in line with people's aesthetics and are deeply loved by the public. It's not just after rain that rainbows appear. After twice refraction and once total reflection, sunlight is decomposed into seven monochromatic lights: red, orange, yellow, green, blue, indigo and purple. What do they show when they are stacked on top of each other? Arch bridge? This is the rainbow we see every day.
Whether a rainbow is beautiful depends on the volume and quantity of water droplets in the air. The larger the volume and quantity of water droplets, the smaller the width of the rainbow and the brighter the color; On the contrary, the wider the rainbow, the darker the color, and even a rainbow cannot be formed. So not all water mist can reflect the rainbow.
Man's wisdom is infinite. Since ancient times, people have summed up many proverbs about rainbows based on many experiences to help people judge the weather changes. For example:? East rainbow sun, west rainbow rain? If the rainbow appears in the west, it means there are many raindrops in the west. As the weather system moves eastward, it may rain locally. If rainbows appear in the east, the weather system will clear up after passing through the local area, while western rainbows mostly appear in the morning and eastern rainbows mostly appear in the evening. There are countless such proverbs: late rainbow, early rainbow, rain? 、? The rainbow is high and the sun is low. Wear hemp fiber in the morning and evening? 、? The rainbow is high and the sun is low, but the flood doesn't cross the stream? Wait a minute.
Artificial rainbows are not difficult. As long as the small water droplets in the air are large in volume and quantity, they can be realized. ?