Why are snowflakes flakes flaked?

Snowflakes are beautiful crystals that cling together in clumps as they fall, forming snow flakes. The size of a single snowflake is usually between millimeters. Snowflakes are light, weighing only grams individually.

No matter how light and small the snowflakes are, how wonderful they are, its crystals are regular hexagonal shapes, so the ancients had the saying that "there are more than five flowers of plants and trees, and six snowflakes are produced". How beautiful and light the snowflakes are! I'm getting more and more fond of snowflakes, and it would be a pleasure to see the land covered with snow and the trees covered in silver again.

Snowflakes are also known as unyang flowers.

Snowflakes are beautiful crystals that cling together in clumps as they fall, forming snow flakes. The size of a single snowflake is usually between millimeters. Snowflakes are very light, and the weight of a single one is only grams.

There are many shapes of snowflakes, including stars, columns, flakes, and so on, but their basic shapes are hexagonal, so the ancients had the saying that "there are more than five flowers of plants and trees, and six snowflakes alone".

Why are snowflakes so hexagonal and so varied?

Xiaoice is changed by the enlargement of small ice crystals, and the ice molecules are hexagonal for the most, so the formation of snowflakes is mostly hexagonal. 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. In the case of the same water vapor pressure, the condensation growth of ice crystals is also different due to the different saturated water vapor pressures on the surface, edges and corners of ice crystals. If the water vapor in the cloud is not very abundant, the actual water vapor pressure is only greater than the saturated water vapor pressure of the plane, and the water vapor only condenses on the surface, and the formation is a columnar snowflake; If there is a little more water vapor, the actual water vapor pressure is greater than the saturated water vapor pressure on the edge, and the water vapor will condense on the edge and on the surface, because the speed of condensation is also related to the degree of bending, the condensation is faster in places with a large degree of bending, so the condensation on the edge of the ice crystal is faster than that on the surface, and more flakes are formed at this time; If the water vapor in the cloud is very abundant, the actual water vapor pressure is greater than the saturated water vapor pressure on the corner, so that there are water vapor condensation on the surface, edge, and corner, but the position of the sharp corner is prominent, the water vapor ** is the most sufficient, and the condensation grows the fastest, so it forms more branch-like or stellate snowflakes.

In addition, the constant movement of ice crystals and the changing temperature and humidity conditions in which they are exposed to ice crystals result in the various parts of the ice crystals growing at different rates, resulting in a variety of snowflakes.

So what kind of snowflakes do you want to see?

There has been so much snow in the south these days, and I haven't had a chance to see it in Ningbo.

1. Pieces of snowflakes are slowly falling like pear blossoms, and they seem to have a sweet fragrance.

2. Pieces of snowflakes are like flying elves, jumping in the air.

3. Pieces of snowflakes fall from the air like goose feathers, fluttering and sprinkling.

4. Pieces of snowflakes fall from the sky, like little fairies dancing in the air in white dance skirts.

Scientists say they can't find two identical snowflakes, even if they are artificial, but if you think about it with your feet, you know it's a theory, because they can't use a microscope to look at all the snowflakes on Earth or even in the universe. How would they know that the snowflakes in Beijing 100,000 years ago were the same as the one that appeared in Harbin this year.

No two snowflakes in the world are exactly the same, because it is impossible to appear, and all snowflakes are different in shape.

Because the crystal structure is limited by many factors, and the structure of ice crystals is complex, it is difficult to have two identical snowflakes.

Every winter, people living in the north can see the snow scene, have snowball fights, and build snowmen are all good memories. The snowflakes are like white dancing elves and are very beautiful. Do you know what shape a snowflake is?

The snowflake really looks like a flower, with six corners, and the shape is still symmetrical. And every snowflake looks alike. So are all snowflakes shaped like this?

Are there two identical snowflakes?

Yes, there are basically no two identical snowflakes in the world. It's about the same as a human fingerprint. Every snowflake is different.

If you want to know why, I'm afraid you'll have to find out how snowflakes are formed. To form a snowflake, several conditions must be met. First of all, it should be very cold.

The temperature of the atmosphere must be low enough, low to below freezing, and at the same time there must be water molecules in the air. Prompted by cold air, water molecules condense layer by layer around small particles.

There are many types of small particles, such as dust and pollen particles, on which ice crystals slowly coalesce and form, and when suspended in the atmosphere, more water molecules attach to the ice crystals. The chemical nature of the water molecules themselves dictates that they will continue to extend in six directions, forming a regular hexagonal shape. These ice cores then collide with each other, creating larger ice groups.

That's snowflake.

Dust, pollen or something else, these are the differences in these starting materials, and the snowflakes are destined to be unique from birth. It's like everyone is born different, it's all unique. Snowflakes are no exception, and each snowflake contains about ten to the power of 19 water molecules.

There are so many water molecules, and there are almost countless ways to arrange them, so what? It's unlikely that two snowflakes will be identical.

It's hard to get so many water molecules in exactly the same formation, and last but not least, if you want to get two identical snowflakes, you need to have exactly the same formation conditions. In nature, this is basically impossible. Why?

Each snowflake travels a slightly different path from the sky to the ground, and the atmospheric conditions encountered along the way will also be different. For example, in different humidity environments, these hexagonal crystals will also be different, when the humidity is low, that is, dry air will promote the growth of hexagonal surfaces. When the humidity is high, it promotes the growth of the tip edge.

High levels of water vapor will also cause crystals to grow faster. It also makes the shape more complex, so each snowflake is truly unique.

Why: Each snowflake experiences a different turbulent environment as it travels through the atmosphere, and each twist, turn, and fall gives it a unique symmetrical pattern.

But if you remove the uncertainty of nature, then these icy flowers are no longer unique. By placing two seeds side by side and cultivating them in exactly the same environment, you can create two snowflakes with almost identical intricate shapes and patterns.

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. 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.

Snowflakes are formed by the condensation and increase of water vapor on Xiaoice crystals. Ice crystals belong to the hexagonal crystal system, and its molecules are mostly hexagonal shapes. The most typical representative of the hexagonal crystal system is a regular hexahedral cylinder in geometry, which has four crystalline axes, of which three auxiliary axes intersect each other at an angle of 60 degrees on a base plane, and the fourth axis (the main crystal axis) forms a base perpendicular to the three auxiliary axes.

When the water vapor condensation crystallizes, if the main crystal axis develops more slowly than the other three auxiliary axes, and is very short, then the crystal forms a sheet; If the main crystal axis develops quickly and extends very long, then the crystal forms a columnar shape. The reason why snowflakes are generally hexagonal is that the speed of crystal growth is much slower along the main axis than along the three secondary axes.

The water vapor content in the atmosphere around the snowflakes cannot be the same in all directions, so as long as there is a slight difference, the side with more water vapor content will always grow faster, and it will naturally take the shape of snowflakes. Because the sharp corners of the ice crystals are particularly prominent, and the water vapor ** contact is the fullest, new branches grow on the edges and corners of the ice crystals in the shape of hexagons, and finally they become snowflakes of various postures in the shape of six petals.

Therefore, the basic shape of a snowflake is a hexagonal and hexagonal prismatic crystal.

The snowflakes are all made up of Xiaoice flowers, each Xiaoice flower has six petals, some of which emit beautiful little tongues like mountain flowers, some are round, some are arrow-shaped, or zigzag-shaped, some are complete, and some are lattice-shaped, but none of them go beyond the six-petal type. ”

The basic shape of a snowflake is hexagonal, but there are almost no two identical snowflakes in nature, just as no two identical people can be found on earth. Many scholars have observed thousands of snowflakes with microscopes, and these studies have finally shown that snowflakes with exactly the same shape and size and perfectly symmetrical parts cannot be formed in nature.