Did You Choose The Color Of The Clothes In Summer?

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< p > hot weather, everyone likes to wear light colored clothes, especially white ones.

Because many small partners feel subconsciously in summer wearing light colored clothes cool, and dark clothes heat absorption fast, in the sun for a while, the surface feels very hot.

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< p >, however, the time has come for friends to overturn world outlook.

According to the experimental research, in hot summer, dark clothes are cooler than light coloured clothes, and ultraviolet radiation is also darker.

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< p > Harvard University has conducted an experimental study. The results show that in hot summer, wear a href= "http://www.91se91.com/news/index_f.asp" > dark dress < /a > cooler than white clothing.

Experts pointed out that the heat in the human body can be radiated by radiation, conduction, convection and evaporation.

Admittedly, black clothes absorb more heat than white clothes, but the heat absorbed can become the power of convection in clothing. (just as summer afternoon, the ground is heated easily to form local convective weather, such as thunderstorm weather, which makes the weather cooler). The convection of air in clothing can dissipate the sweat and some of the heat on the skin surface, and the body will feel cool.

Of course, black clothes should be done loosely so that the convection can be strengthened and the cooling of clothing will also increase.

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Before P, there were also media experiments in the summer. At noon in the summer, three white, black and red cotton t-shirts were put on plastic models, and they were exposed to the sun for 5 minutes, 15 minutes, and one hour respectively. The temperature of the three surfaces of each garment was measured by thermometer.

The results showed that the surface temperature of the white T-shirt was always the lowest among the three, however, the red T-shirt was always the lowest temperature in the internal temperature. Although the inside temperature of the black T-shirt was the highest in 5 minutes and 15 minutes, but after drying for 1 hours, the counterattack of the white T-shirt was realized. That is to say, the white T-shirt's interior temperature was the highest among the three.

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< p > this experiment almost shows that summer wears dark clothes, that is, others look at the heat and cool themselves.

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Shi Yejun, a physics teacher in Xiaoshan fifth middle school, said that the anti ultraviolet performance of clothes is closely related to the color of P.

Under the same conditions, the fabric with deep color has relatively better UV resistance. Compared with that of light blue, light pink and light yellow, red, black, navy blue and dark green are better UV resistant properties.

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< p > besides, the UV protection ability of clothing depends not only on the color but also on the material.

The SPF value of cotton clothing is about 15~40; the SPF value of light colored polyester fabric is about 7~10; the SPF value of light colored knitted dress is about 4~9; the bare arm skin is best protected by gauze shawls and sleeve sleeves.

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< p >, so if you want to prevent ultraviolet rays, you'd better wear dark a href= "http://www.91se91.com/news/index_f.asp" > cotton clothes < /a >.

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