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The sun is hot, sometimes afraid of hot hate, the less you wear, the better, then what color of clothes, what kind of fabric, can you let yourself cool? The reporter prepared dark and light-colored clothes and several common summer fabrics for testing. Of course, experimental errors are inevitable and the results are for the reader's reference only.
Experiment 1: Which cool and dark clothes are cool?
30 ° C clothes for 5 minutes in the sun, dark 34 ° C, light 31.5 ° C.
The reporter prepared two T-shirts of the same style. The fabric is also modal. The colors are black and white. After stacking them into the same size, they are placed in the sun and the initial temperature is 30 °C. After 5 minutes, the reporter measured the surface temperature of the two pieces of clothing. The result showed that the surface temperature of the black clothes was 34 ° C, while the white one was only 31.5 ° C.
Conclusion: Don't wear dark clothes in the sun
In the sun, black clothes absorb more energy from the sun, so the temperature rises more obviously; while light clothes such as white reflect most of the sunlight, the temperature rises more slowly.
Since dark clothes absorb heat quickly, does that mean we can't wear them in the summer? In this regard, a local high school teacher physics teacher Huang told reporters that in indoor or cloudy days where the temperature is lower than the body temperature, you can wear dark clothes, so that the heat on the surface of the skin can be quickly removed, it feels cooler than other colors of clothes. A lot; in the sun, it is best to choose white and other light-colored clothes, otherwise dark clothes will absorb the heat in the sun, equivalent to wearing a warm clothing.
Experiment 2: Which of the linen and chiffon materials is cool?
Sweater 33 ° C; chiffon shirt 33.5 ° C; silk shirt 34 ° C; cotton cedar 34.5 ° C.
The reporter prepared 4 pieces of light-colored clothes of different fabrics, the fabrics were 100% cotton, 100% hemp, 100% silk and chiffon. The initial temperature of the clothes surface was 31.5 °C. Then, put 4 pieces of clothing in the sun for 5 minutes, then test the surface temperature of the clothes, the temperature of the shirt is 33 ° C; followed by the chiffon shirt, 33.5 ° C; followed by the silk shirt, 34 ° C; the hottest It is a cotton shirt, which is 34.5 °C. The results show that the temperature of the shirt is the lowest.
Conclusion: The shirt is the coolest
The molecular structure of this material is relatively loose, and hemp also contains hemicellulose, which absorbs ultraviolet light, so the clothing that wears linen is indeed cooler than other fabrics.
Since the chiffon shirt absorbs heat similarly to the blouse, does it mean that it is almost the same in summer? In fact, in addition to the heat absorption rate, the moisture absorption of the summer clothes material has a great influence on the cooling degree. The clothes with good moisture absorption can absorb the human body sweat in time, and will not give people a feeling of sultry and sticky. Therefore, it is best to use clothes made of natural plant fiber such as hemp, silk, cotton, etc., which are well-absorbed in summer. The clothes of chiffon material, although they look thin, are poor in breathability due to chemical fiber. Wearing it will be sultry. (Shaoxing Evening News)
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