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Snowflakes come in many shapes and are very beautiful. If you put the snowflakes under a magnifying glass, you can see that each snowflake is an extremely beautiful pattern, and even many artists are amazed. But how are the various snowflake shapes formed?
Snowflakes are mostly hexagonal in shape, and this is because snowflakes belong to the hexagonal crystal system. Snowflakes in the clouds"Embryos"There are two main shapes of Xiaoice crystals. One is hexagonal, long and thin, called column crystal, but sometimes its ends are pointed, like a needle, called needle crystal.
The other type is in the shape of a hexagonal flake, like a thin slice cut from a hexagonal pencil, called a flake crystal.
If the surrounding air is less saturated, the ice crystals will grow very slowly and evenly on all sides. As it grows and falls, it retains its original appearance and is called columnar, needle-shaped, and flake-shaped snow crystals, respectively.
If the surrounding air is highly supersaturated, the ice crystals will not only increase in volume but also change shape as they grow. The most common is to change from flakes to stellate.
It turns out that as the ice crystals grow, the water vapor near the ice crystals is consumed. Therefore, the closer you are to the ice crystals, the thinner the water vapor and the lower the degree of supersaturation. Immediately on the surface of the ice crystals, saturation has just been reached because the excess water vapor has been condensed on the ice crystals.
In this way, the density of water vapour near the ice crystal is less than that farther away from it. Water vapor moves from around the ice crystals to where they are. The water vapor molecules first encounter the corners and protrusions of the ice crystals, where they condense and cause the ice crystals to grow.
As a result, the corners and protrusions of the ice crystals will first grow rapidly and gradually become branch-shaped. Later, for the same reason, new branches and forks grew at the branches and corners. At the same time, in the depressions between the various corners and forks.
The air is no longer saturated. Sometimes, there is even a sublimation process here, so that the water vapor is transported to other places. This makes the corners and branches more prominent, and slowly forms the familiar star-shaped snowflakes.
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Hello, according to the situation you described. If it is caused by blood circulation disorders, it is recommended that you apply a local hot compress to a therapeutic massage**. Be as active as you can.
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Dryness, lack of water in the fingers. It is recommended to drink more plain water, use more hand cream, and wear gloves.
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It's a good life.
Me too, uh.
There is a more superstitious belief that the lines on the palms of the hands are related to the health of the body, especially the horizontal lines. It is generally believed that if there are more horizontal lines, the body will deteriorate, and the specific parts are also particular. If there are fewer lines on the palms, then congratulations, your body is healthier than before.
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The display always flickers like snowflakes for a reason:
First, the screen refresh rate is low: open the Display Properties panel, click Advanced, then select the Monitor tab and put it inside"Only the highest refresh rate supported by the display is displayed"Click the refresh rate marquee box next to it, and then click the refresh rate marquee box to select the highest frequency in it.
Second, electromagnetic interference display: is there any large electrical appliances next to it, or a speaker with poor demagnetization, the electromagnetic of such appliances will interfere with the display of the display. Just keep the monitor away from such electrical interference.
Third, display aging failure: If the above two methods cannot be solved, it may be display aging or failure, and it is best to send it for repair.
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This situation.
It is because the refresh rate of the display is set improperly, the reason for this phenomenon may be that someone has changed it or the refresh rate of the display is reduced due to unexpected circumstances, or it may be the driver error of the graphics card, causing the display to only work at a lower refresh rate, to solve this problem, you can right-click on the desktop "Properties" - Settings "- Advanced" - Monitor", in the refresh rate drop-down list according to the situation supported by your own display, select 75Hz or 80Hz, If it is a windows98 system, you can also select the "optimize" option to let the display automatically adjust, and finally click the OK "button" to save to solve, if there is no option to choose from in the drop-down list of refresh rate, it may be that there is a problem with the driver of the graphics card, and you need to reinstall the corresponding graphics card driver.
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Graphics card issues. Take it and have someone fix it.
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Snowflakes are mostly hexagonal in shape, and this is because snowflakes belong to the hexagonal crystal system. Snowflakes in the clouds"Embryos"There are two main shapes of Xiaoice crystals. One is hexagonal, long and thin, called column crystal, but sometimes its ends are pointed, like a needle, called needle crystal.
The other is in the form of hexagonal flakes, like the flakes cut from a hexagonal pencil, called flakes. There are so many shapes of snowflakes that each snowflake is an extremely delicate pattern that even many artists have admired.
Xiaoice is changed by the increase of small ice crystals, and the ice molecules are hexagonal for the most, so the formation of snowflakes is mostly hexagonal, and the shape of each snowflake is not exactly the same. The variety of snowflake shapes is closely related to the water vapor conditions at the time of its formation. For hexagonal flake ice crystals, due to the different degrees of curvature on their surfaces, edges and corners, they correspondingly have different saturated water vapor pressures, among which the saturated water vapor pressure on the corners is the largest, followed by the edges, and the smallest on the plane.
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Looking at the description in the book, the snowflakes are all hexagonal and fall from the sky, and now it is winter, and it has long been snowing in the north, and it is about to snow in the south, and you will know by then.
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The hexagonal shape of a hexagonal snowflake.
We know that the hexagonal shape of snow crystals can be subdivided into two categories, one is flaked, the other is columnar, and the more beautiful snowflakes we often see are those hexagonal symmetrical flake snow crystals. They usually form at temperatures between -5 degrees Celsius and -20 degrees Celsius, with columnar snowflakes consisting of needle-shaped and hollow columns, and needle-shaped snow crystals forming at temperatures ranging from -5 degrees Celsius to -5 degrees Celsius. Hollow columns are formed at temperatures below -20 degrees Celsius.
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The snowflakes are hexagonal and beautiful!
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There are also snowflakes: delta, Xiaoice crystal, hexagonal crystal, ......
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It is generally considered to be hexagonal.
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Snowflakes are hexagonal (i.e., have six symmetrically spaced petals), but each snowflake has a variety of morphological details.
In fact, snowflakes are a type of dendrite, which is a dendritic crystal formed by the crystallization of water (H2O) at high temperatures at low temperatures. The specific shape of snowflakes is related to factors such as temperature, humidity, and chemical composition in the air, and it is also very sensitive to changes, so the shape of snowflakes is ever-changing!
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Xuehua is not dead, she has some disease, she can't speak, she can't move, she has lied for the past few years that Xuehua is dead, but she is actually alive.
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jumped into the sea and died, Qi Yuan pinched it.
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Xuehua did not die, Xuehua suffered from a rare disease - ALS.
ALS is a motor neuron disease. The nerve cells responsible for muscle movement in the patient's body die in large numbers, and these nerve cells are not renewable, and muscle wasting symptoms may occur once the number of damage exceeds 50%. In the early stage of the disease, the muscles of the palms of the hands and other parts will be atrophied, and the muscles of the upper arms will gradually develop, the muscles of the upper limbs will have a sense of beating, and the limbs will gradually become weak, and further develop until the whole body is paralyzed, and the respiratory muscles are weak and lead to respiratory failure.
If you leave it alone, you'll die, but time doesn't matter!
Snowflake had a seizure at the age of twenty and has been unable to speak for twelve years, but still has thoughts. Qi Yuan treated her well and maintained her life. In order not to let the outside world know about her condition, he lied that she was dead.
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I really don't know, I went in and died, I didn't understand what was going on. I haven't understood the plot yet'So...
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Snowflakes are beautiful crystals that come in a kaleidoscopic variety of forms, but they are all hexagonal. The reason why snowflakes are hexagonal is related to how some water molecules combine to form ice tires and how ice tires combine to form ice crystals. The flat row of ice tires is hexagonal crystal.
The combination of hexagons alone does not necessarily form a symmetrical hexagonal snowflake, and according to research, the snowflakes themselves vibrate when they float in the air, and this vibration is carried out around the symmetry point. In this way, it is guaranteed that the snowflakes remain hexagonal at all times during the growth process. As for the variety of hexagons, it is related to the different temperatures and humidity in the air when the snowflakes are floating in the air.
If there is not too much moisture in the clouds, the snowflakes formed are columnar; If there is a little more moisture, the snowflakes will be flaky; If there is a lot of moisture, it will form stellate or branch-shaped snowflakes.
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The meaning of the poem itself is: In the harsh environment of the cold winter, the snowflakes are blowing in the face, the snow is very big but it is difficult to cover their glasses, and the wind blows very hard but cuts their sorrows. People should block their eyes so as not to obstruct their vision, and exaggerate the snowflakes to be as big as the palms of their hands, firstly to describe the snow as fierce, and secondly, to profoundly express the contradiction that snowflakes like palms cannot cover the eyes.
The deep meaning is: this poem reflects the poet's inner depression, sorrow and trouble, the cold wind in the cold winter, just like a sharp knife, originally people should make a decision immediately if they have sorrow, reduce the depression, but this knife-like cold wind can not help people break the sorrow, but also just like their own inner sorrow but can not be solved immediately, and the environment at this time echoes, the author borrowing the scene lyricism is also borrowing the scene to allegorize. The whole poem not only highlights the harshness of the environment, but also appropriately expresses the sorrow and anguish caused by such an environment.
From Qian Qianyi's "Snowy Night" in the Qing Dynasty
Some come early, some come late, wait!
Normal, don't blame yourself, it's good to have your own girlfriend in the future, every man wants to find a virtuous woman who can go out of the hall and in the kitchen, just try to distance yourself and avoid unnecessary misunderstandings.
Standard weight BMI method: body mass index = weight (kg) divided by height (m) squared kg m2 Normal weight : Body mass index = 18 - 25 Overweight: >>>More
Normally, Pu'er tea has ripe tea, raw tea, and ripe tea will have some warehouse flavor (that is, the musty smell you say), so it is normal.
I think you have been suppressed for too long, maybe you would have been a little rebellious at your age, and your family's education methods are suppressing you, so you have a grudge in your heart, and under this kind of resentment, you will not be able to look down on others. In fact, many people will be a little bit of a blushing when they see others are good, but you are not too serious, but I think there should be no big problem, after all, you are still young, pay attention to your own adjustment, and you should be fine.