When the snow falls at the beginning of this year, many cities in China are bathed in white snow, and every corner is decorated with snowflakes to create a fairytale scenery. In such a snowy day, a heated discussion has become the focus of friends from the north and the south: do you need to go out with an umbrella on a snowy day?
Friends from the South: Snow will quickly turn into water when it falls on your head and clothes, so be sure to hold an umbrella!
Friends in the north have a different opinion: the body is covered with white snow to have a winter atmosphere, and you can get rid of it with a little shaking, and you don't need to hold an umbrella at all!
Experts have taken an in-depth look at this. Whether you need an umbrella or not depends on whether it is "dry snow" or "wet snow".
Meteorologists explain that the moisture content of snow determines whether it is "dry snow" or "wet snow".
Snowflakes are made up of ice crystals, which are not easy to melt only when the air temperature is below 0. Some snowflakes fall from a high altitude, and the temperature is always below 0 on the way, so they can fall to the ground in the form of snowflakes, becoming "dry snow". "Dry snow" has almost no moisture, and it falls when you shake it slightly, so it is not easy to leave wet marks. On the way to land, some snowflakes encounter a temperature slightly higher than 0 near the ground, and the snowflakes fall to the ground before they completely melt and become "wet snow". "Wet snow" contains a lot of moisture, which is easy to adhere to the surface of objects, and is not easy to be blown away by the wind after freezing, and it is easy to leave marks on the ground and clothes.
In general, the south has warmer temperatures and most of the snow is classified as "wet snow", while the north is cooler and mostly "dry snow". During this season, the shape of the snow changes depending on the temperature and climate.
However, if you spend a lot of time outdoors on a snowy day, or if you get snow on your body and go indoors with snow on your body, it will melt and soak your clothes. At such low temperatures, this can be extremely uncomfortable with cold and humidity, and may even trigger a cold. Even if you hold an umbrella, the part of your trouser leg that you can't "take care of" is easy to get wet. Therefore, it is believed that whether you are in the south or the north, it is best to choose waterproof clothing on snowy days to keep your body dry and comfortable.
Some netizens said that the waterproof jacket is not elastic, and wearing it will affect his performance in snowball fights.
If you want to enjoy winter sports in the snow, it is important to choose a piece of clothing that does not restrict your large-scale activities, but also helps you keep warm and windproof in the ice and snow. The material used in this nanofilm itself has high elastic properties, and because of the structural characteristics of the fiber membrane, it is made of micro and nano fibers criss-crossed and superimposed, and the fibers can slip between them. When pulled by external force, it is microscopically dynamic, which further increases the elasticity of the nanofilm, so that it can reach 360 degrees of elastic force, and can cope with strenuous exercise without pressure.
In addition, in the other major selling point of membrane clothing, the function of wind and water resistance, Surforce nano membrane can also be perfectly taken into account.
The pore size of the nanofilm is 2-10 m, and the pore size of the light rain droplet is 25mm, raindrops cannot penetrate, while the diameter of air molecules is 0At 4nm, the diameter of the gaseous water molecule is 03-0.At 4nm, the moisture produced by the human body can smoothly pass through the nano membrane, and the structure of this bionic plane cocoon can weaken the wind speed and direction, and the outer layer is windproof and rainproof, and the inner layer can be breathable and moisture-permeable. There is no need to worry about the snow melting getting wet, and the moisture after exercise can easily penetrate the clothes, so it will not cause sweat and cold.
Wear a jacket made of Surforce nano membrane to keep your body dry and warm, whether you're strolling in the snow or playing in the snow. No more struggling with whether to play an umbrella or not.
Experimental data are from the lerune laboratory.