The meaning of Xi Hongyu's proverbs

There are countless proverbs and sayings about Xihongyu since ancient times, among which there are many weather sayings. For example, the proverb "There is rain on the east rainbow and the sun on the west rainbow" circulating in China is a description of a meteorological situation. Let's take a concrete look at the meaning of the proverb about Xihongyu.

West Rainbow Rain Proverb Meaning 1 1, East Rainbow Sunrise West Rainbow Rain is a weather proverb, which means that when a rainbow appears in the east, it is sunny, and when a rainbow appears in the west, it is raining.

2. Rainbow is a light image in the atmosphere. It didn't just come out When the atmosphere is very dry, or there are only tiny water droplets in the atmosphere, rainbows will not appear. There will be rainbows only if there are big water drops in the atmosphere. So there is a rainbow in the sky, which means there are big water drops in the atmosphere; At the top of the rainbow, it may have been raining.

The rainbow is in the east, which shows that there is rain in the atmosphere in our east. The atmosphere generally moves regularly from west to east, and the bad weather in the east will only move eastward more and more. If the rainbow is in the west, it means that there is rain in the atmosphere in the west. With the movement of the atmosphere, rain easily falls on us. Therefore, when there is a rainbow in the east, it is not easy to rain locally, while when there is a rainbow in the west, it is likely to rain locally.

Extended data

1, the weather cleared up after a long wind and rain southerly.

2. Clouds twist raindrops.

3. It rains at dawn and dries fish at night.

4. The anvil is cloudy and rainy.

5. Direct thunderstorm is small and horizontal thunderstorm is large.

6. Flash in the south, hit in all directions, and rain in the north.

7. The moon is holding a red umbrella and it is raining heavily.

8. The moon is holding a blue umbrella and the wind is strong.

9, the sunset shoots the foot, and it rains within three days.

10, northwest unlock, see the sun in the afternoon.

1 1, the starlight contains water, and the rain is coming.

12, it's a long sunny day and it's going to rain.

13, it rained for several days.

14, there are cotton wool clouds in the morning and thunderstorms in the afternoon.

15, calm, sultry, thunderstorm will be strong.

West Rainbow Rain Proverbs Meaning 2 East Rainbow Sunrise West Rainbow Rain means: The rainbow is in the east, and there will be sunny days in the local area; The rainbow is in the west, where it will be rainy.

When the atmosphere is very dry, rainbows don't appear. Only when there are many small water droplets in the atmosphere, the sunlight is reflected and refracted by these small water droplets, and rainbows will appear in the sky.

The rainbow is in the east, indicating that there is rain in the eastern atmosphere, and the atmosphere generally runs regularly from west to east, and the bad weather in the east will only get farther and farther. If the rainbow is in the west, it means there is rain in the atmosphere in the west. With the operation of the atmosphere, rain will easily fall to this place.

Proverbs about the weather

1. It will be sunny when it rains in the morning, and it will rain until dawn at night.

It means that if it rains in the morning, it won't last long, but it will definitely be sunny during the day; But it's just the opposite when it rains at night. It usually rains all night.

2. The ants are moving the snake aisle, and the heavy rain will come soon.

It means that when you see swarms of ants moving on the road in broad daylight and snakes wandering on the road, it may rain soon, because animals have an innate nature.

3. There are clouds hanging in the sky and dripping water underground.

It means that if you see a hook cloud in the sky, it will rain these two days. The appearance of hook clouds indicates that a front or low pressure is coming, which is a sign before rain.

4, spring east wind, rain gurgling.

The east wind blowing in spring is a precursor to bad weather. This is because, on the one hand, the ground will get warmer in spring. On the other hand, the warm air becomes more active, the pressure on the mainland gradually decreases, the anticyclone moves eastward into the sea, and the easterly wind will appear at the tail of the anticyclone. These easterly winds flow to warmer land, leading to the phenomenon that the upper part is warm and the lower part is cold. At this time, the air layer is unstable and prone to upward convection, so it is very likely to produce precipitation.

West Rainbow Rain Proverbs Meaning 3 Rainbow is not a semicircle as people think, but a complete circle. In other words, the rainbow has no beginning and no end. The center of the rainbow is the midpoint of the vertical line between the sun and the earth. The rainbow that people see is only a part of the rainbow, and the rest is below the horizon, so people can't see it.

This can also explain why some rainbows are short, while others are complete semicircles. When the rainbow is semicircular, the sun is just on the horizon, and the center of the rainbow is just on the horizon in front of the observer. When the sun is high in the sky and the center of the rainbow is below the horizon, people can only see a few rainbows.

Seven-color light reason

Rainbow is formed by the dispersion and reflection of sunlight on small round water droplets in the air. When sunlight enters a water drop, it will be incident at different angles at the same time and reflected at different angles in the water drop. Among them, the reflection of 40-42 degrees is the strongest, forming a rainbow that people see.

In fact, as long as there are water droplets in the air and the sun shines behind the observer at a low angle, an observable rainbow phenomenon may occur. Rainbow usually appears in the afternoon, when the rain clears. At this time, the air is less dusty and full of water droplets, and one side of the sky is dark because of rain clouds.

However, observers can see the sunlight without being covered by clouds above or behind them, so rainbows are easier to see. The appearance of rainbow is related to the weather change at that time. Ordinary people can infer whether it was sunny or rainy from the position where the rainbow appeared in the sky. When there is a rainbow in the east, it is not easy to rain locally, but when there is a rainbow in the west, it is likely to rain locally.

The visibility of rainbow depends on the size of water droplets in the air. The bigger the water drop, the brighter the rainbow, and the smaller the water drop, the less obvious the rainbow is. Generally, in winter, the temperature is low, there are few water droplets in the air, and there is less chance of rain, so there is generally no rainbow in winter.

Bending reason

In fact, if the conditions are right, you can see a whole circle of circular rainbows (such as the Buddha's light in Emei Mountain). When this kind of reflection is formed, the sunlight enters the water drop, refracts once, then reflects on the back of the water drop, refracts again when leaving the water drop, and finally hits people's eyes.

The bending degree of light passing through water drops depends on the wavelength (i.e. color) of light-red light has the largest bending degree, followed by orange light and yellow light, and so on, and violet light has the smallest bending degree.

Because water has a dispersive effect on light, the refractive index of light with different wavelengths is different, and the refractive angle of blue light is greater than that of red light. Because light is reflected in water droplets, the spectrum seen by the observer is reversed, with red light at the top and other colors at the bottom.

Each color has a specific bending angle. The refraction angle of red light in sunlight is 42 degrees, while that of blue light is only 40 degrees, so each color appears in a different position in the sky.

If an imaginary line is used to connect the back of the head with the sun, then the place that makes an angle of 42 degrees with this line is where the red color is. These different positions outline an arc. Since the angle between the blue and the imaginary line is only 40 degrees, the blue arc on the rainbow is always below the red.