Why are there patterns on the windows in winter? Detailed answer

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Why are there patterns on the windows in winter? Detailed answer

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Why are there patterns on the windows in winter?

Children who live in areas with real cold winters love to look at the frost on the windows. Some of the images are very beautiful, like intricate designs on trees and leaves.

For the formation of frost on the windows, as well as on trees, grass, certain conditions are needed. Hoarfrost is formed from small crystals of frozen water. When air containing a lot of moisture cools to the freezing point, frost begins to form. The freezing point is 32° Fahrenheit and 0°C at sea level.

As air cools, its moisture content decreases. Excess water condenses on objects such as window glass.

When the temperature drops below 0 °C, water crystallizes. In other words, ice crystals cover the surface of the water.

Why do drawings appear on the window glass in the cold? On the one hand, the crystals themselves have their own structure, which determines the pattern. In addition, scratches on the glass surface, dust particles, air currents help Santa Claus create beautiful patterns on the windows.

White frost, often referred to as "hoarfrost", comes in two forms: granular and crystalline. Granular frost is just frozen fog. Crystalline frost, which we have already talked about, is formed from water vapor in the air. There is a transition from the gaseous to the solid state, bypassing the liquid.

Frost is very dangerous for agriculture, as it can destroy the buds on trees or ripening fruits. Actually, it is not frost that is harmful, but the freezing of plant juices. Peasants came up with many ways to protect their crops from frost. One is to cover the plants with a light cloth to keep them warm. Creating a smoke screen in gardens allows you to cover the trees with a dense layer of smoke and also keeps the plants warm.

Remember that when you admire the patterns of Santa Claus, millions of tons of crops can be at risk.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Why does dry sugar never mold?

Molds (fluffy or velvety deposits on food products that cause spoilage) are formed by special microorganisms - sporulation of the so-called mold fungi. Mushroom threads penetrate the surface layer of the product and, releasing the appropriate enzymes, destroy it.

Under normal conditions, sugar has a very low water content (about 0,02 percent) and at the same time is able to absorb external moisture very quickly. Therefore, it dehydrates (and thereby kills) the microorganisms that have fallen on its surface faster than they have time to penetrate into it and form mold.

The low moisture content of sugar also prevents chemical changes that can cause it to spoil. If the sugar is moistened (or exposed to high humidity for a long time), it will mold and spoil very soon.

Thus, in order to ensure the possibility of long-term (almost indefinitely long) storage of sugar, you should simply keep it in an airtight (tightly closed) container and not expose it to sudden temperature changes.

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