Next week (June 65438+1 October1), a cold air will sweep across most parts of China, and the temperature will drop significantly. It is expected that the minimum temperature will drop below freezing point, bringing a chill to people. However, this does not mean that we should lose confidence in winter. On the contrary, we can use all kinds of warm-keeping equipment, such as electric heaters and hot water bottles, to keep warm.
Electric heating is a very practical warm-keeping equipment. It can quickly heat indoor air and provide us with a comfortable living environment. Whether in the office, bedroom or living room, we can put an electric heater to keep the indoor temperature within a suitable range. In addition, electric heating also has the characteristics of energy saving, and the power can be adjusted as needed to avoid wasting energy.
Secondly, hot water bottle is also a simple and effective way to keep warm. We can pour hot water into a hot water bottle, then wrap it in a towel and put it under the bed or in the part of the body that needs to keep warm. The heat of the hot water bottle can gradually dissipate, providing us with lasting warmth.
In addition, we can cope with the cold weather by moderately increasing clothes. Wearing thick coats, sweaters, scarves and other multi-layered clothes can effectively block the invasion of cold air. When choosing clothes, you can choose some materials with good thermal insulation performance, such as wool and down, to increase the thermal insulation effect.
Characteristics of cold air:
1, cooling: the most remarkable feature of cold air is that it brings obvious cooling. When the cold air mass arrives, it will replace the original warm air, resulting in a sudden drop in temperature, and weather phenomena such as cold wave or frost may occur. This sudden change in temperature has a great impact on human life and agricultural production.
2. Increased wind: Cold air is usually accompanied by strong wind. This is because the density of cold air is high and the sinking speed is fast. When it meets warm air, it will produce a great pressure difference, thus forming a strong wind. This kind of wind is usually called north wind or northeast wind, with high speed and stable direction.
3. Dry weather: Cold air comes from high latitudes, and one of its characteristics is dryness. Therefore, when cold air comes, it will often bring dry weather, less precipitation and lower air humidity, which may lead to problems such as dry skin and respiratory discomfort.
Baidu encyclopedia-cold air