Every winter, when shivering with cold, someone often sends a clothing thermometer.
As long as the external temperature is added to the value of each piece of clothing, it is finally equivalent to the somatosensory temperature. When the somatosensory temperature reaches 26 degrees, the body will not feel so cold.
This is why Mom wants you to wear long Johns.
Er, er, er, wait! Is this the people of the southern hemisphere going to the wrong stage?
Now this hot summer day, it is the barbecue mode every day. The temperature is fast 40 degrees. Wearing a T-shirt makes you feel ripe. I wish I could even use depilatory cream. Don’t we need [negative temperature] clothes that can reduce the somatosensory temperature?
Today, Dr. Clove invited professionals to talk to everyone.
Do you have any clothes that can cool down?
There is.
Instead of making two pockets on clothes and stuffing ice bags into them to cool down, there are really clothing fabrics that can cool down.
Japan Bell Textile Fiber Company has previously introduced a textile fiber. If worn outdoors, it can make people feel that the temperature is about 3 degrees lower than that of the outside world.
Scientists naturally want to find out what this black technology is. The Zhang Hongxia Research Group of Zhejiang University of Technology confirmed through analysis that this material is nylon.
Huh? Nylon has something what boasts about, not just the kind used on cables, but also commonly used clothing fabrics. Who has never seen it?
Looking intently, it is true that nylon is not the core technology of this material. What really works is the 3% metallic silver plated on the fiber.
Silver is one of the most reflective metals, so wearing it to go out is like those cars covered by reflective films in the hot sun. No matter how harsh the sun is, there is nothing to hurt you. Of course, it is cooler to wear such clothes.
However, the price of silver-plated clothes is definitely not cheap. For the sake of this negative 3-degree enjoyment, the bank card balance is likely to become negative.
Is this cooling? No, it’s called “cool when the salary is exhausted”.
Do you have any cheaper clothes that can cool down?
There are also.
The fabric that can cool off without hurting your wallet is what many people have agreed on-linen fiber. Although it does not reflect sunlight, the clothes made of it can probably have a negative 3 degree effect.
Flax’s structure is very hydrophilic, so it can absorb sweat. Compared with pure cotton materials, flax has capillary effect, not only absorbs sweat, but also perspires, and when perspirating, it takes away heat, thus reducing the somatosensory temperature.
Another example is silk, which feels very comfortable after wearing it. The principle is similar, but the disadvantage of silk is that it is not close to the skin and the cooling effect is not as good as flax.
Therefore, inspired by flax, some synthetic fibers today have also been made into hollow structures to enhance perspiration function, and [dacron] has become [really cool], but the relative price is also much higher.
Choosing the right color is also important
Of course, it is not enough to pay attention to the fabric. Color is also a major factor affecting the somatosensory temperature.
One thing everyone has personally experienced is that dark clothes look hotter, while light clothes are cooler. This is because dark clothes absorb sunlight more easily, while light colors reflect sunlight relatively more easily.
There is also a saying that red clothes are the coolest, because the main source of heat in sunlight is infrared besides visible light.
However, infrared rays are invisible light, while wearing red clothes can only reflect visible light of red wavelength, which is not as effective as reflecting full wavelength of white clothes.
Besides, white and cold-colored clothes will feel cooler psychologically than red and warm-colored clothes.
However, white clothes also have the same disadvantage: they reflect infrared and visible light, but ultraviolet rays can easily penetrate, which is not good news for what in summer.
However, experiments have proved that dark clothes can absorb even ultraviolet rays, and the transmittance of ultraviolet rays is greatly reduced.
Light-colored clothes reflect sunlight and are cool but not sun-proof. Dark clothes absorb sunlight, heat but are sun-proof.
Light color or dark color may really torture a person with choice phobia. Of course, if you don’t have difficulty in choosing, the better way is definitely:
Light color clothes + sunscreen
Wit?
Also consider the style
Of course, there is one other thing that cannot be forgotten, that is, the style of clothes.
Don’t need Dr. Clove to emphasize, you also know that you can’t wear too thick in summer:
Whether natural or synthetic, the thermal conductivity of fibers is far lower than that of metals.
In other words, if the clothes are too thick, the heat emitted by the body will accumulate. Even pure white linen fibers, tightly wrapped in a quilt, will also cause heatstroke.
Therefore, to cherish life, it is better to wear light, loose and breathable clothes in summer.
So, after reading this article, do you want to go out in what tomorrow?