In winter, why do ice flowers freeze on the glass windows?

In winter, it's much warmer inside the house than outside. The water vapor in the house falls on the glass, and because the outside of the house is cold, the glass is cold, and the water vapor condenses into ice flowers when it is cold.

Ice Flower: Water vapor condenses into ice flakes on the smooth surface, like countless flowers, so it is called ice flower. The windows are frozen flowers.

In winter, the reasons for the formation of ice flowers on the glass windows are: 1) because the glass is a bad conductor, and 2) because the greater the temperature difference, the faster the heat conduction. In this way, the trajectory of the cold air flow outside on the glass, because the glass is a bad conductor and is not easy to diffuse, and because of the huge temperature difference between the house and the room, the trajectory of the cold air flow outside is cloned on the indoor glass first.

That is, the glass of the house is affected by the different shapes of the air flow of the cold air outside, thus describing in detail the parameters of the cold air on the glass. The diagram explains not only the parameters of the movement of the wind on the glass, but also the solids in which the water molecules in the hot air can be directly solidified into water. Why is it that under the same conditions, frost forms on iron plates or walls, but does not produce ice flowers?

This is because iron plates have better conductivity than glass. The trajectory of the cold air flow in the room soon spread, so that the track that the room wanted to restore was long gone, so the iron plate could only frost and not flower. Because the building is too thick, the common branching energy of the air flow generated by the cold air scraping against the wall will not be restored in the house, so it can only frost and no flowers.

Glass is a poor conductor. Because the greater the temperature difference, the faster the heat conduction. In this way, the trajectory of the cold air flow outside the glass is not easy to diffuse because the glass is a bad conductor, and because of the huge temperature difference with the house, the trajectory of the cold air flow outside the house is first cloned on the glass in the house.

That is, the glass in the house is affected by the different airflow shapes of the cold air outside, and the change parameters of the cold air on the glass are drawn in detail.

The drawing illustrates not only the parameters of the movement of the wind on the glass, but also the water molecules in the hot air, which can directly condense into a solid of water. Why the same conditions iron plates or walls, frost, but do not produce ice flowers.

In winter, the ice flowers on the glass window are frozen on the side of the glass room, and the water vapor in the room freezes when it encounters the colder glass at the glass.

In the cold winter, the temperature difference between indoor and outdoor is large, and the water vapor with higher indoor temperature directly condenses into a solid when cold on the inner surface of the door and window glass, forming ice flowers, while the outdoor water vapor temperature is low and is not easy to condense on the outer surface of the glass. In winter and spring, although the temperature is very low or even below freezing, the water droplets in the fog are still liquid and do not freeze into ice crystals, because of the lack of active freezing nuclei at that temperature in the fog at that time.

Inside, in the cold winter, the temperature difference between indoor and outdoor is large, and the water vapor with higher indoor temperature directly condenses into a solid when cold on the inner surface of the door and window glass, forming ice flowers, while the outdoor water vapor has a lower temperature and is not easy to condense on the outer surface of the glass.

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".

In winter, the weather is cold outside and warm inside, and the temperature difference between indoor and outdoor is very large. Water vapor in indoor air condenses into ice when it encounters cold glass windows.

The condensation of water vapor requires a medium, just like the formation of raindrops and snowflakes. There is no dust in the air. Water vapor does not condense into raindrops and snow.

The glass window glass is covered with dust. The so-called "windows" are made up of many ice flakes, which are condensed and trembling in the dust, and if the glass is clean, then there are no flowers on the glass.

The cause of this is usually a sharp cooling or sublimation.

The conditions for the formation of condensation are relatively special, generally requiring the concentration of gas to reach a certain requirement, and the temperature should be lower than the temperature of the condensation point, such as water vapor when it is lower than 0 degrees Celsius, etc., and the cause of formation is generally caused by rapid cooling or sublimation.

It is a phenomenon in which a substance skips the liquid state and changes directly from the gaseous state to the solid state. It is a change in the state of matter that occurs when the temperature and air pressure of a substance are below the three-phase point. In the process of condensation, the material should be exothermic.

<>When the humidity of the indoor air is greater than 80%, and the outdoor temperature is lower than 0 degrees Celsius, the water vapor in the indoor air is easy to form ice flowers on the window when it encounters cold glass, and this ice flower is frost. When ice flowers appear on the window, you can apply a layer of soapy water or cooking oil to the window, or you can apply petroleum jelly solution to the window, these methods can prevent the window from freezing to a certain extent. You can also use hot air to blow the glass of the window, so that the temperature of the glass surface is much bent on the temperature of the pants when it is frosty, so that the window is unlikely to freeze.

<> ice flowers on the windows in winter are formed due to the large temperature difference between indoor and outdoor temperatures. Because of the cold winter, the outdoor temperature is low, so the surface temperature of the window glass is also relatively low. In addition, the temperature of the room is high, and the temperature of the water vapor present in the room is also high.

In the case of a very large temperature difference between indoor and outdoor, the high temperature water vapor meets the low temperature of the glass surface, which will directly undergo physical changes and condense into solids, which is a common ice flower in cold weather. In addition, when the glass on the surface of the window is not smooth, such as dust on the surface of the glass, the glass itself is very rough, etc., the water vapor cannot be evenly covered, and ice flowers with different shapes will be generated.