On the same earth, why is it easy to get tanned by the sun when I get to the countryside? And the city has always been white, which has nothing to do with the water you said.
1. The ultraviolet rays of the sun are stronger.
Because most of the rural areas are land, and the absorption of this solar radiation by the land is very low, unlike cities, all cement roads and cement roofs, ultraviolet rays are easily reflected back by these buildings. Moreover, there are few buildings in rural areas, most of which are open farmland, which is basically exposed to solar radiation, while cities are different, with heavy traffic and dense buildings, which is sometimes a luxury for solar rays.
Second, it takes longer to go out in the countryside.
In the countryside, you can't stay inside the house, because everyone has to go to the farm, and it takes 12 hours during the day, about 8 hours in the field, and it takes longer to receive solar radiation, so it is easy to turn black. Children, in particular, love to play, so they turn black faster. In the city, in addition to buying food every day, a whole set can be kept. In particular, there are takeout now, and some of them don't go out all week.
Third, I talked about the maintenance consciousness after returning home.
Have you found that when people go to the countryside, they gradually become lazy, because there is no fast-paced life, and they can get up whenever they want, without any interference? Of course, sometimes I sleep until noon, get up and eat directly. What sunscreen, cream, don't use it, keep it all natural.
Four: There is less air pollution, and the sky is bluer
In rural areas, we are always surprised. The sky is really blue, which means that the stronger the ultraviolet rays are, the lower the temperature is, just like the Qinghai-Tibet Plateau, and the ultraviolet rays are particularly strong, and sometimes the stinging skin hurts and a layer of skin will fall off.
Actually, this black is not natural black, but sunburned by ultraviolet rays. If you go back to the city and take good care of it, it will return to its original appearance in a few days.
Moreover, there is a saying in rural areas that the darker the skin, the healthier it is. This statement is reasonable. It can prevent sunburn by ultraviolet rays, and after the skin is dark, there are fewer mosquito bites.
When you go back to the countryside, you must take sunscreen and mosquito bites. After all, in China, it is not welcome to get dark.
This girl is from the countryside.
When she was in the city, her face was still white and tender, and so were her hands. But when she left the city and went home, her face was black in less than two days.
It's hot and sunny in summer vacation, and you go to work in the farmland every day, but no matter how you wear your hat, it's still dark all at once.
you said to wear sunscreen, which is impossible. It is also black and useless.
If you don't do farm work in the city, your face is of course white and you get less sunlight.
When I came back to the city, even my friends almost didn't recognize me, and I was several years older.
every time I go back to the city during the summer vacation, I dare not go out in the first week, and I secretly go out at night when I go out, hahaha!
After a week, my face turned white again, hahaha!
the tanning of people's skin has nothing to do with whether people are in the city or in the countryside, and it has nothing to do with what water they drink.
The skin is easy to get tanned, which is only related to two factors. The first factor: the time of exposure to sunlight; The second factor: the intensity of ultraviolet rays in sunlight.
When people go to the countryside, if they spend more time outdoors than in the city, they will get sunburned easily. If the cat stays indoors in the countryside, it won't be dark. Although the migrant workers in the construction site in the city are in the city, they are all so dark because they work outdoors and receive sunlight directly every day. This has nothing to do with whether he is in the city or in the countryside or what water he drinks.
The intensity of ultraviolet rays is related to whether the air is clean and the density of the air. If air pollution in some cities is serious, ultraviolet rays will be blocked more, so it is good for skin protection. In most rural areas, the air is relatively clean, and ultraviolet rays penetrate strongly, which will cause greater damage to the skin. The air in Gansu and Qinghai in the northwest plateau is not only clean, but also low in air pressure and thin in air, which is conducive to ultraviolet penetration. So if you go to the Qinghai-Tibet Plateau for a few days, your skin will get darker than that in rural areas in North China.
The subject's observation is really meticulous, and it is indeed so. It's going to Tomb-Sweeping Day soon, and it's estimated that many people will return to their hometown to visit the graves of their deceased relatives. Then, some of them will inevitably go out for a few days. When I first got home, everyone was beautiful, but after the holiday, I returned to the city again and suddenly became a little black girl. Why is it not easy to get tanned by the sun in the city, and it turns black in a few days when I go home? Is it because it is related to the water you drink?
actually, the answer is not like this. It has nothing to do with the water we drink, mainly because of the following reasons:
First, there are not many shelters in rural areas. In cities, although they often run outside, they are basically indoors, entering from one building to another and shuttling back and forth between reinforced concrete houses. Even when you go out, there are buses, taxis, subways, etc., and when you go shopping, you are in the shopping mall, so you don't have a chance to get the sun even outdoors, because there are high-rise buildings everywhere. In the countryside, it is different, and it is not convenient to travel. It is basically by walking, and there is no obstacle in the countryside. Even walking will be exposed to the sun.
secondly, the sun in the countryside is more vicious. Although it is the same sun, the countryside is beautiful, the air quality is better, and there is no smog at all, so the ultraviolet intensity is naturally higher. In cities, air pollution is relatively serious, and if nothing else, smog will be much more serious. It is also half an hour in the sun, which is obviously different in the city and the countryside.
Finally, after returning to the countryside, I don't pay much attention to dressing up, and I often "go out early and come back late", running around all day, can I not get a tan? After many people return to the countryside, they change to another person, from a beauty in the workplace to a village girl, not only wearing more grounded clothes, but also saving makeup. When you go out in the city, you often wear sunscreen, sunglasses and umbrellas, but in the countryside, many people don't pay attention to these things. In addition, there is nothing interesting in the countryside. I spend all day playing outside with friends and classmates, and spend most of my time in the sun, so it is easy to get dark.
What's more, some people don't get much sunshine in the city all the year round, and they often apply all kinds of cosmetics and sunscreen. Their skin is very delicate, and it is easier to turn black when they are exposed to the sun. It's going to be clear soon. Although the ultraviolet intensity is not strong at this time, those who go back to their hometowns to sweep graves should also remember to take good sun protection measures!
Although this problem is a small one, it does exist. So what is the reason why it is not easy to get a tan in the city, but it is easy to get a tan in the countryside? There are mainly the following reasons.
First, we can see that the countryside and the city are two relatively different fields. Take the city as an example, it is full of beautiful things, full of traffic, high-rise buildings, and there are very few places where you can see the sun. The countryside is different, most of them are in the open air, and most of the work is done in the open air. It can be said that the sun in the countryside is very big, which is very irritating to the skin and harmful to the skin.
most of the work in the city is done indoors, but it is different in the countryside. Most of them make a living by growing crops, and they all have to be harvested in the wild, and they all have to be done in the sun.
I believe we all feel that urban people pay more attention to skin care, while rural people pay little attention to it. A simple example can be seen. Take the matter of buying cosmetics. It is enough to see that the consumption of cosmetics by urban people is close to tens of thousands a year, while that of rural people may be one or two thousand or even less a year. I have a deep feeling that my mother does farm work at home all the year round, and almost buys face oil every year. I have hardly seen any other cream. In this regard, rural people really do worse, which is why it is the easiest to say that skin in rural areas.
Tell me about yourself and answer this question with practical analysis (why is it not easy to get tanned by the sun in the city, but it turns black in a few days after going home? )。 I'm a man, and there may be a slight difference between a woman and a man, but the difference is basically not too much.
I've just come to live in the city for a few years, and I've really turned my face white. This change will take several months. What I need is stability after the implementation of my work, a stable income from my economic sources, and a stable residence. Such a person who lives in the city, regardless of his salary and working environment, will generally turn a little white after a few months, which he really won't notice because of the slow change. It's often relatives and friends who haven't seen each other for months, saying that you've turned white a lot, or comparing them with previous photos, only to find that the change is great.
why don't you go out when you go back to your hometown and get dark after a few days in the sun?
I know this very well. Every time I go to the countryside for more than three or four days and a week, everyone says it's getting dark. I really don't go outdoors or bask in the sun. Why?
Analysis from several aspects
1. Nutrition intake and absorption are different. In urban life, due to the solidification of economic resources, the food eaten every day is basically stable, and the intensity of activities and work is not much different, and the body has established a corresponding balance. When I suddenly go to the countryside, the difference in eating changes changes, or I am generally treated as a guest for a few days, and the balance between nutrient intake and consumption is broken. These two or three days are manifested on the skin surface.
2, the temperature difference is different. A city is a greenhouse with great thermal efficiency, which doesn't change much for a while. No matter where there is no direct sunlight in your room or outdoors, the temperature difference won't be too big. During the day and night, the hardened areas such as cement are wide, and the green area is also made of hardened edges. The heat released at night makes the temperature difference in the city small. The countryside is different, the temperature difference between day and night changes greatly, and the stimulation of the outer layer of the human body increases.
3. Air and urban air are naturally mixed. There are dust particles floating in the air, but these particles wear away the black ink on people's epidermis like toothpaste when we wash our skin. The air in rural areas is fresh, all of which are just vomited by plants, but mixed with rural oil smoke (oil and wood-burning smoke and ink dust), which floats on people's faces, making their faces darker naturally, while the rural areas are more open, with more cold and hot wind blowing into people's cortex, increasing pores and fine ink dust falling in, which is much darker naturally.
4. Light. There are many tall buildings in the city, and the ultraviolet rays that can enter are only a few hours at noon when they are directly exposed. Most rural areas are built in the open space of Chaoyang, and when the sun shines from morning till night, no matter whether you are indoors or outdoors, you don't directly bask in the sun, and it takes one or two times more time to form strong light by reflection than in the city. This makes people's skin much darker.
5. Water and pH value. Most of the water in the city is supplied by water supply companies. After disinfection, dilute bleaching powder is added, and the optimal pH value of human body is adjusted. In most rural areas, there is no professional tap water to be supplied by water companies. Drinking water is well water, mountain spring water and river water, most of which are different in pH value. A person who has lived in the city for a long time and formed water with the same pH value for a long time, suddenly went to the countryside, drank and washed different water quality, and his skin must have reacted. After adding the above-mentioned infiltration, it really turned black in a few days. I also said that bleaching powder should not bleach people's skin, but only when the PH value changes.
due to my limited knowledge, there may be mistakes in summary and expression, please forgive me.
why is it not easy to get a tan in the city, and it turns black after a few days when you go home?
This is a question that many young people who go out are wondering. Even if they blow outside for two days in winter, it will turn black. Why?
The process of urbanization is rapid. There are many curtain walls in high-rise buildings everywhere, and these curtain walls will also reflect a lot of ultraviolet rays to reduce the influence of ultraviolet rays on the skin. In rural areas, they are all bungalows, with less glass and no tall buildings. Comparatively speaking, the intensity of ultraviolet rays is much greater than that of cities.
Secondly, the air pollution in cities is more serious. Haze, pm2.5 and other environmental factors have caused a large number of small particle pollutants in the air. Even when polluted weather occurs in cities, the sky is gray and the ultraviolet intensity is greatly reduced. In rural areas, the air environment is better and there are fewer small particle pollutants. Therefore, the blocking effect on ultraviolet rays is much worse, and the intensity of ultraviolet rays in rural areas is higher than that in cities.
Finally, many tall buildings in the city will form many natural shadow areas, which have no sunlight radiation. Therefore, many areas in the city are basically free of ultraviolet radiation; For rural areas, such areas are much less.
The above are my views on this issue. Please let me know if there is anything wrong.
Alas, we rural people have dark skin, which seems to have little to do with water. Now we all use tap water here. Not all rural people are darker than city people, and a few farmers have relatively white skin, which has something to do with their natural skin.
Farmers who still plant land at home and often go to the fields to do farm work are generally dark-skinned. On a hot day, they can bask in the sun as long as they work in the fields. In the case of such strong ultraviolet rays, it is strange that they can't get dark.
when you go back to your hometown, if you don't go out and stay in the dark, it can only be related to the climate and air in the countryside. If you can't go out, you can't stay indoors all the time and stay out for a while. The air in the countryside is good, the pollution is light, and the ultraviolet rays are relatively strong, especially on sunny days with high temperature. If you stay outside for a short time, maybe you will get some color to see.
people say that sunbathing is healthy. Black spots are black spots, and health is good.
living in the city, no one is not an air conditioner and a mobile phone. Even on weekends, they are too lazy to go out for a morning or a day. Take the bus to work and the subway after work, even if you take your children to a park, you will hide in the shade and watch them laugh and play. Thinking, these Xiong Haizi, such a big sun, are still having such a good time.
when you get to the countryside, you will find that it is full of your childhood memories. Three-or four-year-old people suddenly have childlike interest, cut bamboo, make fishing rods, fish in the sun, and even if they catch a fish that cats are not very interested in, they are happy to show off everywhere.