The joint school science exhibition is reopened this year, with the theme of "balance", hoping to make people reflect on the relationship between science and life.
The exhibition will be held at the Hong Kong City Hall for 6 consecutive days starting from today (3rd). It will display 20 creative inventions of secondary school students. The public can enter the exhibition free of charge.
The joint school science exhibition was cancelled last year due to the epidemic and will be reopened this year.
The exhibits were prepared by local middle school students who had won the plan competition earlier.
The theme of this year's exhibition is "Balance". Through the exhibition, students are hoped to reflect on the relationship between science and life, strike a balance between technological development, environmental protection and social needs, and achieve sustainable development.
The former assistant director of the Observatory, Liang Rongwu, used the COVID-19 pandemic as a metaphor in his speech. He pointed out that everyone is affected by the pandemic because of the loss of balance in development. "Humans are plundering natural resources endlessly, causing imbalances in the biological system." I hope that students will reflect on the importance of balance. sex.
Air purifier helps spirulina grow as plant fertilizer and is more edible
One of the participating schools, Minsheng College, won the championship earlier in the plan competition. The "air from algae" air purifier they designed not only absorbs formaldehyde and other pollutants in the air through chemical mixtures and activated carbon, but also uses spirulina. As a medium, it can absorb carbon dioxide in the air and release oxygen at the same time under the illumination of LED orange.
The special feature of "air from algae" is that spirulina absorbs carbon dioxide for its growth. Spirulina has a wide range of uses and is rich in nutrients. It can be used as organic plant fertilizer, and even can be eaten by humans.
One of the members, Wu Haohong, mentioned that the source of inspiration was a group move, and the air quality deteriorated due to the release of formaldehyde from the furniture after the arrival of the new house, so he had the inspiration to make an air purifier.
Blue light inhalation warning glasses remind users to take a break
The second runner-up was the blue light detection glasses designed by students from Jiangsu and Zhejiang College in Shatin. One of the designers, Chen Yingqiao, pointed out that due to the epidemic in recent years, many practical tasks have been transferred to the Internet, and the blue light intake has also increased, but Long-term exposure to blue light can affect sleep quality.
The blue light detection glasses can monitor and record the intensity of blue light. When exposed to blue light for a long time (about eight hours), the system will remind the user to suspend work and take a rest through electronic products.
The smell of Tuen Mun River inspires research on salvage vessels
The students of the Tan Li Lai Fen Memorial Middle School of the Church of Christ in China won the third place in the plan. The school is located in Tuen Mun. The students also have classes near the Tuen Mun River every day. Classmate Feng Ziming described the Tuen Mun River as a garbage river. Smell", but precisely because of this, they inspired them to make remote-controlled cleaning boats. The boats collect floating garbage on the ship through the conveyor belt, reducing the water resistance caused by the boat hitting the river bed in shallow water and the garbage being stored underwater. .
Feng also mentioned that he hopes that technologies such as solar panels can be added in the future to make salvage vessels operate in a more environmentally friendly manner.
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