Guess, the same is wearing a skirt, three of them, who wears the coolest body? Online said that dark clothes absorb heat, it is definitely the coolest in white clothes, but is this the case? Let's look at an experiment!
experiment one
At 12 o'clock in the afternoon, when the sun was violent, three clothes were hung on the clothesline, and a thermometer was placed on each piece of clothing.
After 5 minutes, the thermometer on the red and black clothes showed that it had exceeded 40 ° C, while the thermometer on the white clothes showed a temperature of 38.7 ° C.
Experiment 2
At an outdoor temperature of about 32 ° C, spread the clothes on a mat and let the sun shine for 20 minutes.
The results showed that the thermometer on the red dress showed the lowest number at 36.5 °C. The thermometers for white and black clothes show numbers of 37.1 ° C and 36.9 ° C, respectively.
in conclusion
According to the experimental results, it was found that in a short period of time, the white clothes were the coolest, and the long-term exposure was that the red clothes were cooler.
It has always been easy for people to think that dark clothes absorb heat quickly and white clothes absorb heat slowly, so in a short time, light clothes will be cooler.
Light-colored clothing can reflect part of the ultraviolet light, but the ability to absorb ultraviolet light is not good, and the long wavelength of red light can absorb a lot of ultraviolet light in sunlight, so if you are in the sun for a long time, wearing red clothes will be cooler.
Not wearing less, the more you can prevent heatstroke
Many people think that wearing sleeveless and halter tops will be cooler in summer. Many men like to play bare-chested and feel cool. In fact, the less summer you wear, the more you can prevent heatstroke. Only when the skin temperature is higher than the ambient temperature, the skin can conduct heat. When the temperature is close to or exceeds the human body temperature, the skin can not only dissipate heat through conduction, but also The absorption of heat in the external environment is more likely to cause heat stroke.
Darker clothes are cooler
Harvard University in the United States has done an experiment, and the results show that wearing dark clothes in summer is cooler than wearing white clothes. Black clothes absorb more heat than white clothes. The absorbed heat can form convection power in the clothes. The sweat and part of the heat on the skin surface will be taken away. The body will naturally feel cool. Of course, black clothes should be looser. This will enhance the "convection" and the coolness of the clothes can be increased.
In addition, wearing black clothes indoors or on cloudy days, this time there is less sunshine, black does not play the fast-absorbing nature, but only uses its ability to dissipate heat quickly, quickly removing the heat from the surface of the skin, making people feel cool. Quite a lot, naturally it feels cooler than other colors of clothes.
The seemingly thin chiffon skirt, quick-drying clothes are not cool
Chiffon skirt, chiffon shirt, quick-drying clothes... This seemingly light and cool material is not "cool" at all. In summer, the human body sweats a lot. Although the chemical fiber fabric is relatively light and thin, it has poor water absorption and poor air permeability. It is difficult for the skin to dissipate heat through sweat evaporation. Excessive sweat retention can cause skin secretions to spoil and ferment, and synthetic fibers are mixed in the production process. Monomer ammonia, methanol and other chemical components, the skin is more irritating, easy to induce allergies and dermatitis.
In contrast, cotton, hemp, silk and other natural fibers are preferred hot days, the silk skin-friendly, more lightweight, wear cool whole body; cotton clothing absorbent, breathable; large pore material flax, breathability and Good water absorption.
The "sun protection value" of clothes is not only related to color
The UV protection of clothes depends not only on the color, but also on the quality of the clothes. The sun protection value of cotton clothes is 15~40, the sun protection value of light-colored polyester clothes is 7~10, and the sun protection value of light-colored knitted clothes is 4~9. If you want to protect against UV rays, it is best to wear dark cotton clothing.
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