The Asian Games are getting closer and closer. In the first half of this year, Zhejiang Science and Technology Museum took the Asian Games as an opportunity to launch the "Science and Sports" theme exhibition in the museum, showing the technological innovation contained in sports from three aspects: smart devices, sports technology, and smart services. Recently, the Zhejiang Provincial Science and Technology Museum planned a special event of "Science and View" and entered the venue hosting the Asian Games e-sports project - Hangzhou E-sports Center, China.
When sports join hands with science, how can advanced equipment research and development and venue construction add icing on the cake to competitive sports? Let's take a look together.
How children exercise is important
At the beginning of the event, Cai Youzhi, deputy chief physician of orthopedics and master's supervisor, came to everyone a "open clinic" on the spot. Dr. Cai is also the deputy director of the Institute of Sports Medicine of Zhejiang University and an expert in promoting health in exercise.
Doctor Cai brought a knee model to popularize a lot of knowledge about sports and health. Dr. Cai told everyone that not all sports are suitable for every child, and parents need to make a consideration.
"For example, the familiar seating body forward bend may actually have a certain impact on the growth and development of children's spine, so when doing it, you must be moderate and progress step by step.
"Little girls who like to dance should not over-pursuing flexibility, because the child's body has not yet fully developed and matured. Over-pursuing flexibility at this time will cause certain damage to the child's joints.
"There are also many children who like roller skating . They pursue speed and rotation posture excessively, which has a greater impact on ankle , because children have weak muscle strength and cannot withstand the impact of roller skating sharp rotation."
Is there any exercise that is more suitable for children? Dr. Cai’s recommendation is swimming. “Swimming can promote height and joint development, and is very suitable for children’s exercise.”
Dr. Cai also reminds parents that when children exercise, they must proceed step by step. When doing strenuous exercise, they should prepare protective gear for children. “If children grow faster in the past six months or quarter, the amount of exercise during this period should not be too large to avoid causing exercise damage.”
In the following questioning session, parents asked Dr. Cai about their doubts, and Dr. Cai also gave professional answers one by one.
Mysterious Hercules in the table tennis event
Next, the gold-medal science popularization counselors from the Zhejiang Science and Technology Museum brought everyone a wonderful scientific experiment show. Why doesn’t things slide down when placed on the slope? Why do you feel obstructed when pulling things? This is actually because of a mysterious strongman: static friction.
What is the static friction force? What are its conditions for its generation? In the "Life Laboratory", the counselors of the Science and Technology Museum vividly demonstrated the role of static friction and dynamic friction through chopsticks, bottles, boxes, toothbrushes, shoes and other common items in life, allowing children to gain a more intuitive understanding of abstract physical concepts.
The second guest is Gongshu District "National Fitness Share Asian Games" Table Tennis Project Promotion Ambassador Zhang Yudong , and he is also a former Chinese national table tennis team athlete. Zhang Yudong first shared his personal experience: although table tennis is exciting, it requires unremitting efforts and continuous persistence behind it.
Zhang Yudong said that small table tennis balls also contain great scientific interests. For example, the static friction between rubber and ball is mentioned in scientific experiments, and the elastic collision between the ball and the racket also follows the law of reflection. The larger the incident angle , the larger the reflection angle .At the event site of the
, Zhang Yudong personally demonstrated to parents and children some basic concepts in table tennis sport , such as horizontal and straight sport grip, as well as ball rub , up and down spin, etc., which made many children interested in the national sport of table tennis.
When asked, many table tennis players will have the habit of blowing at the ball before serving, and Zhang Yudong also gave popular science from professional athletes. "This is actually because athletes are usually a little nervous in major competitions, so that their palms will sweat, and the slippery palms may affect the angle of the shot. Therefore, many athletes will like to wipe their hands first and then blow them to dry their hands before serving."
In the interactive session of the event, the host also invited parents and children to go on stage to play the ball together. The final winner is neither father nor mother, but a child.
Zhang Yudong also personally taught the children how to hold the serve. Parents and children have a relaxing and leisure time of exercise and enjoy the joy brought by exercise.
Technical elements in e-sports venues
Finally, the technical teacher of the Hangzhou E-sports Center in China took parents and children to visit this Asian Games venue full of technology.
The teacher at the venue introduced to everyone as he walked, "You can look up and see that the skylight in our hall is made of electrochromic glass . This glass can change its color at will under the action of an electric field. This way, the degree of light and indoor temperature in the venue can be adjusted according to environmental changes."
" Have you noticed that we have no echo when speaking in the venue? This is because the inner wall of the venue is adopted glass fiber perforated plate. When the sound in the hall enters the pores and cavity in the board, it will cause friction and consumption with the air inside, reducing the reflection problem of sound waves in the venue, and thus has a good sound silencing effect. "
activity ended, the children followed the teacher into the "digital cockpit" of the Asian Games venue. Seeing the smart venue under the application of digital technology , the children couldn't help but exclaimed repeatedly.
text: Weng Danni
pic: Jin Jingxin
editor: Li Shili
Editor: Shen Zhijun Zhu Xiaodong
Editor: Chen Yi
Producer: Yu Liang
Producer: Yu Liang
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