Snowflakes are mostly hexagonal. Because ice molecules are mostly hexagonal, there are many patterns. Hexagonal flake ice crystals have different saturated vapor pressures because of their different curvatures on the surface, edges and corners, in which the saturated vapor pressure is the largest at the corner and the smallest at the plane.
Under the same actual water vapor pressure, the sublimation growth of ice crystals is different because of the different saturated water vapor pressures of each part. For example, when the actual water pressure is only greater than the plane saturated water vapor pressure, the water vapor only condenses on the surface, forming columnar snowflakes.
When the actual water pressure is greater than the saturated water vapor pressure at the edge, condensation will occur at the edge and surface. Because the speed of sublimation is also related to curvature, where the curvature is large, sublimation is faster, so the sublimation of ice crystal edge is faster than that of surface, forming more flake snowflakes.
When the actual water pressure is greater than the saturated water vapor pressure on the corner, although there is water vapor condensation on the surface, edge and corner, the sharp corner is prominent. Water vapor is the most abundant, and condensation grows fastest, so many branches or star-shaped snowflakes are formed.
Coupled with the constant movement of ice crystals, their temperature and humidity conditions are constantly changing, which makes the growth rates of various parts of ice crystals inconsistent and forms various snowflakes. Baidu encyclopedia-snow.
2. A poem about snow, Snow at Night.
Bai Juyi
I was shocked, my pillow was cold, and I saw the window lit up again.
Knowing that it snows heavily at night, I can hear the sound of bamboo folding.
Jiang Xue.
liu zongyuan
There are no birds flying over those mountains, and there are no traces of people in those paths.
A boat, a bamboo cloak, an old man fishing in the cold Jiang Xue.
Biedongda
Gaoshi
Thousands of miles away in Huang Yun, the sun is shining, and the north wind blows goose feathers and snow one after another.
Mochow has no confidant in the road ahead, and no one in the world knows you.
Xue Mei
Lu Meipo
For the sake of spring, Xue Mei refused to surrender, and the poet put down his manuscript fee to comment on this chapter.
The snow in Mei Xu Xun is three points white, but the snow has lost a kind of plum fragrance.
Winter pastoral scenery
Chengda Fan
Let the boat idle to watch the snow-capped mountains clear, and the wind will get colder and colder at night.
Sitting and listening to a drop of pearl jade, I don't know that the lake has become ice.
winter
Kang Hai
The clouds are frozen before the snow, and the plum blossoms will not bloom.
Running water, small bridges, mountain temples, bamboo fences, thatched cottages.
Extended data:
Snowflakes are mostly hexagonal. Because ice molecules are mostly hexagonal, there are many patterns. Hexagonal flake ice crystals have different saturated vapor pressures because of their different curvatures on the surface, edges and corners, in which the saturated vapor pressure is the largest at the corner and the smallest at the plane.
Under the same actual water vapor pressure, the sublimation growth of ice crystals is different because of the different saturated water vapor pressures of each part. For example, when the actual water pressure is only greater than the plane saturated water vapor pressure, the water vapor only condenses on the surface, forming columnar snowflakes.
When the actual water pressure is greater than the saturated water vapor pressure at the edge, condensation will occur at the edge and surface. Because the speed of sublimation is also related to curvature, where the curvature is large, sublimation is faster, so the sublimation of ice crystal edge is faster than that of surface, forming more flake snowflakes.
When the actual water pressure is greater than the saturated water vapor pressure on the corner, although there is water vapor condensation on the surface, edge and corner, the sharp corner is prominent.
Water vapor is the most abundant, and condensation grows fastest, so many branches or star-shaped snowflakes are formed. Coupled with the constant movement of ice crystals, their temperature and humidity conditions are constantly changing, which makes the growth rates of various parts of ice crystals inconsistent and forms various snowflakes.
Baidu encyclopedia-snow
Poetry describing the sadness of snow: Snow comes too late in spring, so it flies in the courtyard. The north wind rolled up the white grass and scattered them, and the snow in August crossed the Tatar sky. I don't know if the courtyard has fallen down now, but I suspect that the forest bloomed last night. The clouds are low and dusk is low, and the snow dance is empty. The snow in Mei Xu Xun is white, but it has lost its fragrance. Autumn wind rings, and wine flies to winter snow. Sad and rainy. The north wind blows geese, and snowflakes are falling. Mochow has no confidant in front, and everyone knows you. There are no birds in hundreds of mountains, but there are no footprints in thousands of roads. A boat and a bamboo cloak, an old man is fishing in the cold Jiang Xue. There are some plums in the corner, and hanling opens them alone; I know from a distance that it is not snow, because it has a faint fragrance. The snow-capped mountains in Qinghai are long and dark, and the lonely city overlooks Yumen Pass. At dusk, the mountains are far away, and the cold family is poor. Chai Men hears dogs barking and returns on a snowy night. Then he disappeared around the corner, leaving only hoof prints, knowing that snow was as cold as hands. I know from a distance that it is not snow, because it has a faint fragrance. I was stunned by the cold pillows and bright windows. I know it snows heavily at night.
If the sentence about snow is very sad, then don't write ancient poems. A sad word about snow is a tear from the heart. Snow is as cold as ice, but it can't bear to lose its softness, but it is sentimental. On snowy days, why do people always want to travel far and can't think of any way to improve each other? After the snow stopped, the weather was still as cold as before. There has always been a lingering knot in my heart. I don't know if I think too much or flatter myself. I always feel that our relationship is like snow, one big and one small, one near and one far away. Walking alone in the vast snow. I don't know whether I am lonely or lonely. I still remember the snow, which accompanied me all night, until my heart was frozen and I could no longer feel your appearance. I still remember the snow, which accompanied me all night. I couldn't look forward to the blooming season and buried all my enthusiasm in this cold snowy night. How beautiful. Oh, this snow is like an elf. Look! They are still flying in the air. It would be great if they could accompany me and make me no longer lonely. Snow makes the whole world purer, but it can't hide a person's inner sadness! Walking around the yard alone, looking at a string of deep or shallow footprints under your feet! The cold wind blows through the snowflakes flying all over the sky, like dancing elves, so beautiful! How beautiful! But the weather is so cold, everything is depressed, and I always feel a little sad in this season. The falling debris is not only white, but also indifferent. I thought it belonged to me when I held it in my hand, but it slowly melted, evaporated and disappeared, and also took away the little tenderness in my heart. It was a snow, so piercing. This snow is as white as my heart. Later,
5. Famous aphorisms about snow can be poems or not. This is a group of poems (words) about snow. After careful reading, it can be understood that the author describes snow from different angles. Not only the description methods are different, but also the emotions expressed are different. In the description, some authors profoundly portrayed Si Nuo's character; Some authors describe the state of snow with detailed images; Some authors make the snow more vivid by contrast, while others put their emotions directly in the snow. The snow in Mei Xu Xun is white, but it has lost some fragrance. (Lu Meipo) Snow is like plum blossom, and plum blossom is like snow, but it seems different. (Lv Benzhong) There are some plums in the corner. hanling opens them alone. Knowing from a distance that it is not snow, because there is a faint fragrance wafting in (Wang Anshi) is a clever use of snow and plum blossoms in color, season, the hope that spring has come, and their mutual description of support. Only when they saw the mountains like clouds did they get stunned by the snow. There are thousands of Yushu trees on the Thousand Peaks, and there are thousands of clouds scattered on the Thousand Trees. (Yuan Zhen) Six flying flowers came into the room, and I sat and watched the first half of the poem "Green Bamboo Becomes a Qiongzhi (Gao Pian)", which described the typical snow scene in the north, "It is a typical' hundred mountains have no birds, thousands of paths have no footprints'" and the bad weather staying indoors. However, the second half of the poem is expressed by the author through natural scenery. Let the winter in the north become warm and gentle, instead of being brutally killed by snow. The author expressed his passion for nature and life concretely and appropriately. Then he disappeared at the corner of the pass, leaving only hoofprint behind him (Cen Can) saying that it was the hometown of Qinling Mountains, and the snow was blue, and the horse did not move (Han Yu). These two poems are written by the author to express sincere feelings between people with snow. This is a typical lyrical way of borrowing scenery, based on the rendering of natural scenery. Let readers have the mood of * * * songs. Just like the strong wind in spring, it blows away the petals of ten thousand pear trees at night (Cen Can). Snow disappears outside the door, Qian Shan is green, the riverside is blooming, and February is sunny (Ouyang Xiu). Snow and spring are what we are most familiar with. These two poems express the author's full enthusiasm and optimistic outlook on life. The author used poetry to provide us with a colorful picture of spring, reminding us of the beauty of spring. It is literary works that enlighten people's minds. The snowflake on the swallow was as big as a seat and blew off the Xuanyuan terrace. It's cold in Whitestorm, and the snow is big (Li Bai). This is a poem by Li Bai that directly describes the big snowflake, and we can directly quote it to describe the snow. Yulong was defeated by 3 million, and was covered with bruises all over the sky (Bird). This is the author's bold imagination, writing snow as a long forest floating down from the fierce battle sky. Give Snow White a chivalrous role. When the environmental atmosphere and psychological feelings are suitable, you can quote this unique poem. Catkin is floating outside the curtain (Xie Daowen) because of the wind, and its fragrance is still burning. Sitting alone at night, people are very tired and lonely, and dreams are even more lonely. (Shen Pei) This is a good combination of snow and human meditation, and it is the loneliness of talented women in feudal society.
6. Poetic description of snow "Night Snow" Tang Bai Juyi
This night, the pillow was ice, which surprised me. I saw the light snow outside the window. It's late at night until it snows heavily, because you can hear the sound of bamboo branches breaking from time to time.
"Jiang Xue" Liu Tang Zongyuan
There are no birds flying over those mountains, and there are no traces of people in those paths. A boat on the river, a fisherman wearing his webworm moth; Fishing alone is not afraid of snow and ice.
Don't Dong Datang Gao Shi
Like a bird, she still flapped her wings and felt sorry for herself, leaving Beijing for more than ten years. A gentleman is poor, who wants to meet today without paying for drinks?
"Xue Mei" Lu Song Mei Po
For the sake of spring, Xue Mei refused to surrender, and the poet put down his manuscript fee to comment on this chapter. The snow in Mei Xu Xun is three points white, but the snow has lost a kind of plum fragrance.
"Winter Pastoral Fun" Fan Song Chengda
Let the boat idle to watch the snow-capped mountains clear, the wind will freeze cold and freeze late. Sitting and listening to a drop of pearl jade, I don't know that the lake has become ice.
Winter sea
The clouds are frozen before the snow, and plum blossoms will not bloom. Running water, small bridges, mountain temples, bamboo fences, thatched cottages.
References:
Baidu Encyclopedia-Poetry of Snow
7. The emotional poem about snow fell in love with you at first sight, which was the most beautiful encounter in my life.
Making a promise with you is the most eternal scenery in my plain years. I've always wanted to say that wherever I go, the place I want to go most is by your side.
May we love each other until the end of time. I believe we can wait for our hair to turn gray together.
You are here, I am here, and the seas run dry and the rocks crumble. Not too gorgeous, only one sentence I like you, but it can make each other care.
Honey, you know, even though I'm black and blue, I still have the strength to love you. Some people only look at you, but they affect your life.
Life is like wrapping jiaozi. No matter what stuffing you are, I will wrap you tightly in my heart. No matter how the boiled water of life is cooked, my love for you will never fade! How many people have been hurt by love, how many people's hearts have been hurt, how many memories have been destroyed, how many feelings have been hurt, how many memories have been lost, and how many memories have been lost. Even if a moth puts out the fire, it still doesn't hesitate. They only look at love and hurt themselves, but they can't end their lives. They shed a lot of spoony tears, drank a glass of turbid wine and tasted how much ordinary love! If you are my lotus, let me keep a long-term affection for you in my life! "My eyes are raining for her, but my heart is holding an umbrella for her. This is love. " At least once in your life, forget yourself for whom.
I really like you. Please believe me.
Let the tide of love come closer to us bit by bit. No matter how big the storm is, I will be by your side to shelter you from the wind and rain. I want to love someone, that is, the determination to abandon everything and only be with her.
Love, without reason, is because of the throb of the heart, affection, no excuse, a thousand times looking back. Even if the world disappears, my love for you is still there.
Put that oath gently on your finger and the two of them will be together forever. A growth is just a fall, and only the old times bring us happiness.
Love is simple: one you, single-minded. The most romantic thing I can think of is to grow old with you.
Kiss, open your hand, and let love stay here. With calm love, I will accompany you to see the fleeting scenery.
Although you are not the best, you are the only one I love. I would like to spend ten thousand cycles for you and me forever.
You are forever, no matter how long, no matter how far, I will always love you. The oath of love will always be with you and me.
Just because I took one more look at you in the crowd, I never forgot your face again.
Put you in my heart, close my hand and silently pray that God will guide me, not for eternity, but for being by your side. Thinking about you is something I don't have to think about every day. As time goes by, you remain in my heart.
Although there are many flowers, there are no duplicates. I hope you are my destiny takes a hand. There are many people who like you and don't lack me, but I love very few people, only you! No matter how the years change, my love for you has never changed! Just for one person, all my life, the ends of the earth, I only wish you peace! As long as I am with you, there is nothing I don't want to do. Let me protect you forever! We are all unique, let's get to know each other by destiny, and let's spend our lives together with love! On that day, you were the end of the world and I was the cape, in pairs. At that time, you were the bright moon, I was the clear spring, and I was full of worries about life. I love you every day, love you every moment, miss you every minute, and hope that God can complete our life! I have no time to participate in your past, and I will accompany you to the end in your future! I will wait for you in spring. As the mountains and rivers agreed, if you look up and see clouds floating in the sky that day, it will be the most beautiful meeting in our life. Who will fight for hegemony? Now I have pointed my finger at the end of the world, but I just want to caress the piano for you and be carefree from now on! At that time, on the West Lake, you played for the Iraqi people, and the Iraqi people danced for you, and you couldn't play all the love in your last life. The blue butterfly was drunk among the flowers and walked around the world hand in hand.
Waiting for the years to change, my love for you has never changed! The love of a lifetime is only for Iraqis! Do you know you are my favorite person? It is not impossible to go through fire and water for you. I have never loved you so much. When I met you, I felt I was the luckiest person! Among thousands of people, flowers bloom and fall in that season, and you and I first met; On that sunny and flowing day, you and I knew each other; When Xia Feng looked at the stars tenderly side by side, you and I fell in love. I would rather spend my whole life waiting for you to find that I have been by your side and never gone far.
Love is not that deep. Being together is the greatest happiness. Because of you, I believe in true love. Because of you, I believe forever.
I want to tell you loudly that you have always been in my world. We all say that no matter what happens in the future, don't forget some childish promises! I miss you in the sky, in front of me, in my heart, and in my heart.
Talk about love for the purpose of marriage once in your life, and then stay together like that. In the fleeting time, the years are good. Once in a lifetime, talk about a love for the purpose of marriage! Believe for the last time, go straight ahead and you will reach the end of your life. With me, nothing can be greater than you.
Love is the first time we meet, but we still miss it after thousands of turns. Where are you, that is, you want to be the end of the world that I miss.
I will spend my life with you and protect you. The first time I saw you was the most beautiful encounter in my life.
Making a promise with you is the most eternal scenery in my plain years. The only meanness in this life is that you are mine.
Thinking about the future with you, I'm not afraid of anything else. 20 16 with your company, I believe that we will not be afraid of wind and rain.
8. Xue Shi Qing 1, a suggestion for a friend Bai Liu Juyi, there is a ray of green in the old bottle and a touch of red in the static furnace.
With dusk and snow coming, how about a glass of wine? There are only twenty crosses in the whole poem, and there is no profound sustenance or flowery rhetoric. But between the lines, there is a warm and cheerful color, a warm and warm friendship, and a warm and spring-like poetry. 2. Liu Zongyuan, Jiang Xue, has no birds in hundreds of mountains and no footprints in thousands of roads.
A boat on the river, a fisherman wearing his webworm moth; Fishing alone is not afraid of snow and ice. Since Liu Zongyuan was demoted to Yongzhou, he has been greatly stimulated and depressed mentally.
By describing the scenery of mountains and rivers and praising the fishermen who live in seclusion between mountains and rivers, he expressed his lofty and aloof feelings and his anguish and distress in political frustration. So he wrote this famous poem with resentment.
3. Bai Juyi has been stunned by the night snow, and the window is bright. It's late at night until it snows heavily, because you can hear the sound of bamboo branches breaking from time to time.
Bai Juyi's Night Snow was written in the winter of the 11th year of Yuanhe in Tang Xianzong (8 16). The poet was 45 years old at that time, and his official position was Jiangzhou Sima.
At that time, Bai Juyi was banished to Jiangzhou for writing a letter about the assassination of the Prime Minister. In the cold and silent night, the author felt the snow outside the window and felt more and more lonely, so he wrote this song "Snow at Night". Chun Xue Hanyu didn't have a beautiful New Year, but she was surprised to see the grass buds in early February.
Snow comes in late spring, which means the flowers in the courtyard are flying. Unreal and romantic imagination renovation: First, the poet turned his pen, leaving "Fanghua" and writing "Snow" instead, showing the scene of spring coming from the perspective of flying snow in spring and turning it into flying flowers in spring.
Second, it is human emotion to turn human feelings into things, look forward to spring and complain that spring is late. However, the poet gave human emotions something heartless in the way of empathy, which made Snow White resentful of the late arrival of spring scenery, so Snow White was considerate and deliberately turned into flying flowers to decorate spring scenery. The third is to turn over Joan Hinton, feel dejected, send spring to fly, add joy, snow to fly, wear a court to compose a tree, turn Joan Hinton into the joy of spring, and turn indifference into interest.
9. Poetry about Snow Love 1. Snow used to be like flowers, but now it is like snow. -Fan Yun's "Don't Poetry"
2. Know spring in the snow. -Li Qingzhao's "The fisherman is proud, knowing spring in the snow"
The frost on the ground is as thick as snow. -Wang Guowei's butterfly lovers, the frost on the ground is as thick as snow.
The laurel bush in front of the courtyard was loosened by the snow, and the sarong hung under the porch. -Liu Yuxi's "Dressing Song"
5, a little work, the snow is loose, it is a tear for you. -Peng Yuanxun's Six Ugliness and Huayang
6. The people on the side are like a moon, with frost and snow on their wrists. -Wei Zhuang's "Bodhisattva Man Everyone Says Jiangnan is Good"
7, build by laying bricks or stones falling plum blossom like snow chaos, brushed a suit is still full. -Li Yu's "Qing Ping Le, Don't Come to Spring Half"
8. The wind will set the flowers deep, and there will be red snow outside the curtain. -Li Qingzhao's "Good Things Near, the Wind Will Fall Deep"
9, face drunk, flying snow, a few days of sorrow. -Wu Wenying's "Twelve Lang Blows Hongqiao"
10, the light and shadow of the small window came back, and Yan Yu was surprised and worried. -Mao Xizhen's "Bodhisattva Man, Pear Blossoms Full of Fragrant Snow"
1 1, three feet of snow, dream back to the old honeymoon machine. -Li Shangyin's "Going to Shu Dong after the funeral, going to the three customs to meet the snow"
12, it's easy to say goodbye after a brief encounter, as beautiful as snow. -Wei Zhuang's "Ying Tianchang, Don't Come to Le Shu for Half a Year"
13, there is snow in Jiang Meichun. . I hope I can break the news in Jiangnan. -Zhao Ding's "Liang Zhu, a snowy Jiang Meichun"
14, the mountains overlap and the gold disappears, and the clouds want to fragrant snow. -Wen Tingyun's "Bodhisattva Crossing the River, Overlapping Hills, Shining with Gold"
15, such as snow on the mountain, such as the moon between clouds. I heard that you have two hearts, so I came to break up with you. -Zhuo Wenjun's "White-headed Song"
16, the north wind blows away the third snow, and dreams around the peach blossom moon. -Nalan Xingde's "Bodhisattva Man, the north wind blows away the snow for three nights"
17, if it is like a full moon, I will not hesitate to heat the ice and snow. -Na Lanxingde's "Death to Hua Lian, No pains, the most pity for the sun and the moon"
18, plum blossoms are full of branches, you are affectionate, learning snow and turning with the wind. -Feng Yansi's Quetazhi Romefan Wan Zhi.
19, when you come to the lotus curtain, you want snow, and the pear cloud is like a dream. It is already Qingming dusk. -Gao E's Jade Case, Silk is thicker than fog.
20, dream ten miles, plum blossoms are snowing. To also, weak and weary through illness, since * * * Su E said. -Yin Huan's "colorful plumage (Ode to Jasmine)" The first article.
10. What kind of emotional snow does the poem Snow Contain express? It is white and flawless, and has been the object of poets' praise for thousands of years.
There are many descriptions of snowflakes in the Book of Songs: "The sky is the same as the clouds, and the rain and snow are foggy", "The rain and snow gather first". Especially in the last chapter of Xiaoya and Cai Wei, it is a thousand-year-old saying: "I have been there, and the willow is the first one. Now think about it, it's raining again. "
In the first snow, there are snow beads first, and sometimes snowfall is accompanied by rainfall, so there is a saying that "rain and snow are raining". Snowflakes are falling all over the sky, elegant and gentle, and there are thousands of scenes, which have aroused the reverie of many poets. Cen Can, a poet in the Tang Dynasty, wrote a poem "Snow Sent Military Judges Back to Beijing", which used pear flowers to describe the snow: the north wind rolled white grass, eight In the snow crossed the Tatar sky, and suddenly a spring breeze blew open the petals of ten thousand pear trees.
In Song of Snow at Night, Lu You compared the falling of snowflakes to the scattering of flowers by a goddess, and Ma Gu threw rice: the north wind blew snow and flew to Wan Li, and the night window rang with paper. At first, I suspected that the goddess was scattering flowers, but I was afraid that Magu would throw rice.
In the thirty-seventh chapter of Romance of the Three Kingdoms, Luo Guanzhong wrote a poem describing Liu Bei's snow, and when he met Huang on the way, he compared the snowflake to the jade dragon's scales falling off: the back view was too empty, and it was suspected that the jade dragon was fighting; the scales flew all over the universe in an instant. In Yuan Dynasty, George's Sanqu Ode to Snow used four common metaphors, namely "mortar" (lime), "noodles", "salt" and "powder", which can be described as ingenious in vulgarity.
The scene of snowflake falling is strange, but what makes people admire is the art of snowflake itself. Snowflakes are called snowflakes because they have all kinds of flowers. If we put snowflakes under a magnifying glass, we will see that each snowflake flower is a unique and exquisite pattern.
There are many lovers of snowflake patterns in the world. They collect all kinds of snowflakes and find that there are 6000 kinds of snowflakes that are different from each other. Some people even spend their whole lives filming snowflakes, and they still think that it is only a part of the snowflakes that nature has fallen into their hands until their death. Although the shape of snowflake is varied and colorful, it cannot be separated from its basic shape-hexagon.
As early as more than 2,000 years ago in China, Han Ying's poem "Biography of Chinese Poetry" in the Western Han Dynasty said that "there are five flowers in the vegetation and six snowflakes alone". Geng Xin, a poet in the Northern and Southern Dynasties, also recited in his poem: "Snowflakes bloom six times, and ice beads reflect nine lights."
In the absence of a magnifying glass at that time, this discovery was not simple. In Europe, it was not until A.D. 16 1 1 year that German Kepler described the snow crystal as hexagonal in his impromptu work "Hexagonal Snow", which was more than 1000 years later than China. There were also poems about six snowflakes in the Tang and Song Dynasties. For example, Gao Pian, a military commander in the Tang Dynasty, wrote a poem about snow: "Six flying flowers come into the house and sit and watch the bamboo branches become beautiful."
Han Qi's poem about snow in Song Dynasty: "Six flowers need wax, and snow needs to bloom". Why are snowflakes hexagonal? Liu Xi of the Han Dynasty explained in Ming Jie: "Where five flowers come out, six snowflakes come out, and Yin counts."
It certainly doesn't make any sense. In the Song Dynasty, Zhu explained in his genre: "Snowflakes must produce six, and the cover is only opened by the strong wind, so it produces six."
If a person throws a mass of mud on the ground, the mud will be torn and turned into petals. There are also six yin numbers, and the lunar yuan fine stone is also six edges, covering the natural number of heaven and earth. "
This explanation doesn't make any scientific sense. Why do snowflakes come out in six? As we all know, snowflakes are solid precipitation formed in clouds, which is formed by condensation of water and gas on the basis of ice crystals.
Ice crystal is a kind of crystal, its molecules are arranged regularly and have a hexagonal structure, so the crystal of snow formed is also hexagonal. How big and how heavy is the snowflake? Li Bai's "Popular North" said: "Yanshan snowflakes are as big as seats, and pieces of them blow down Xuanyuantai."
This is naturally an artistic exaggeration of literature. According to scientific measurement, the maximum diameter of snowflakes measured now is 20 cm. According to statistics, a cubic meter of snow contains billions of snowflakes.
Only on an extremely accurate balance can the weight of snowflakes be weighed. Generally, one gram of snowflakes needs 3000 to 10000.
Because of its low density, light weight and high air resistance, snowflakes tend to float lightly in the afternoon. When encountering other snowflakes, they tend to stick together and become goose feather snow with a diameter of several centimeters. Because it gives off heat when it condenses and absorbs heat when it melts, it is colder when it melts than when it snows.
Li Yi's "Joining the Army in the North": "The Tianshan Mountains are cool after the snow" is written in this scene. This is consistent with the folk proverb "It is cold before frost and cold after snow".
Liu Zongyuan's Jiang Xue: There are no birds in hundreds of mountains, and there are no footprints in thousands of roads. A boat on the river, a fisherman wearing his webworm moth; Fishing alone is not afraid of snow and ice.
This poem describes the loneliness of the environment in the snow, and also embodies the proverb that "sparrows will fall into the snow when feeding". Snow in Yan Dong is a disaster for birds. Every time before the arrival of heavy snow, they began to feed, and it was cold. Naturally, there were no birds in the mountains.
Snowfall time is early or late in different areas, and snow time is long or short. The northern and western regions are "Eight Days of Tatar in In the snow", and even in May of the following year, it is still "Five In the snow in Tianshan Mountain, and it is cold without flowers".
In the Central Plains, however, "Qian Shan is green outside the snow gate, and the riverside is sunny in February", while there is no snow all year round in the south of Nanling. People like snow, and more importantly, it can benefit mankind. In Lu You's poems "beginning of spring" and "Early Spring", it snows 300 times a year, and the suburbs are green in spring.
"I'm glad that a snow will crush the disaster, and I'm not afraid to connect yin and pharynx" and "Xue Rui indicates a bumper harvest" are more popular agricultural proverbs, expressing people's love for Xue Rui and their desire for a bumper harvest.