Many people say that dark clothes absorb heat, and they must be the coolest in white clothes, but is that true? Guess what, it's the same in skirts, among the three of them, who wears the coolest body?
Let’s look at another experiment
At 12 o'clock at noon, when the sun was scorching, three pieces of clothing 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 a temperature of over 40℃, while the thermometer on the white clothes showed a temperature of 38.7℃.
When the outdoor temperature is about 32°C, spread the clothes on a straw mat and expose them to the sun for 20 minutes. The results showed that the thermometer on the red clothes showed the lowest number at 36.5℃. The thermometers for white and black clothes show 37.1℃ and 36.9℃ respectively.
According to the test results, it is found that white clothes are the coolest when exposed to the sun for a short period of time, while red clothes are cooler when exposed to the sun for a long time. For a long time, people have simply assumed that dark clothes absorb heat quickly, while white clothes absorb heat slowly. Therefore, light-colored clothes will be cooler in a short time.
Pale-colored clothing can reflect part of ultraviolet rays, but it is not good at absorbing ultraviolet rays. Red light has a longer wavelength and can absorb a lot of ultraviolet rays from sunlight. Therefore, if you wear red clothes in the sun for a long time, it will be cooler.
It’s not that the less you wear, the better you can prevent heatstroke
Many people think that wearing sleeveless and camisole will be cooler in summer. Many men like to be shirtless and think that it’s cooler. In fact, the less you wear in summer, the better you can prevent heat. As long as the skin temperature is higher than the ambient temperature, the skin can conduct heat dissipation. When the temperature approaches or exceeds the human body temperature, the skin not only cannot dissipate heat through conduction, but also Absorbing heat from the external environment can more easily cause heat stroke.
Dark clothes are cooler
Harvard University in the United States once conducted an experiment, and the results showed that wearing dark clothes in summer is cooler than wearing white clothes. Black clothes absorb more heat than white clothes. The heat absorbed can form convection power in the clothes, and take away the sweat and part of the heat from the skin. The human body will naturally feel cool. Of course, black clothes should be looser. This can strengthen the "convection" and increase the coolness of the clothes.
In addition, wear black clothes indoors or on a cloudy day. At this time, there is little sunlight. Black will not exert its fast heat-absorbing nature. Instead, it only exerts its ability to dissipate heat quickly. It quickly removes the heat from the skin and makes people feel cool. Quite a lot, it feels cooler than clothes of other colors.
The seemingly flirty chiffon skirts and quick-drying clothes are not cool
Chiffon skirts, chiffon shirts, quick-drying clothes... This seemingly light and cool material is not "cool" at all. Human body sweats a lot in summer. Although chemical fiber fabrics are relatively frivolous, they have poor water absorption and air permeability. It is difficult for the skin to dissipate heat through sweat transpiration. Excessive retention of sweat will cause skin secretions to erode and ferment, and synthetic fibers are mixed in the production process. Chemical components such as monomer ammonia and methanol have a greater impact on the skin, and simply induce allergies and dermatitis.
In contrast, natural fibers such as cotton, hemp, and silk are the first choice for hot weather. Silk has good skin-friendliness and is more frivolous, and it is cooler when worn; cotton clothes absorb sweat and have good air permeability; linen raw materials have large pores, and air permeability. Good water absorption.
The "sun protection value" of clothes is not only related to color
The UV protection effect of clothes not only depends on the color, but also depends on the material of the clothes. The sun protection value of cotton clothes is 15-40, the sun protection value of light-colored polyester fiber clothes is 7-10, and the sun protection value of light-colored knitted clothes is 4-9. If you want UV protection, it is best to wear dark cotton clothes.