There are more and more children wearing glasses. In order to protect the children's eyesight, is the lighting in the classroom brighter and better? Not necessarily, this is the answer given by the relevant personnel of the Research and Development Center of the Ministry of Education. Recently they came. I went to 8 primary and secondary schools in Xiamen for research, including 4 elementary schools, 2 junior high schools, and 2 high schools.
It is understood that Xiamen is the first stop of the Ministry of Education's research activities, and the activities also include the distribution of questionnaires to 20 schools. The survey included not only lighting equipment, but also drinking water dispensers, with the aim of collecting scientific and objective data to develop new classroom lighting environmental standards and standards for campus drinking water equipment.
Use the screen of the mobile phone to measure the strobe
The investigators of the Ministry of Education first came to a middle school in the city and walked into a classroom in the first day. Looking up, the 8 fluorescent lamps were very bright. The researchers took out the phone and turned the lens on to the fluorescent light. "This can test strobes." The researchers explained that sometimes the stroboscopic light that the naked eye can't see, the screen of the mobile phone can "recognize", and the strobe light will adversely affect the child's vision.
In another elementary school, the researchers were attracted by the lights as soon as they entered the classroom. “It’s so bright!†According to reports, the school was remodeled and used LED lights. Professionals put the illuminance tester on the desk to check the intensity of the light on the desktop. According to the researcher, according to the “Standards for Lighting and Lighting Hygiene of Primary and Secondary Schoolsâ€, which was established in 2011, the classroom table should maintain an average illuminance of not less than 300 lux, and the test results are up to standard.
In the teaching building of this elementary school, the researchers also visited the setting area of ​​the straight drinking fountain. “The position of the water dispenser and the sink is best adjusted.†See the water dispenser at the door of the bathroom. The researcher said that the straight drinking fountain should not be too close to the bathroom, preferably placed at the entrance of the corridor.
Bright is not the only standard for good lights
Parents and children often think that the brighter the light, the better the illumination, the better. Is this true? "Not necessarily." The researchers said that when the light is too bright, glare will occur, that is, there is an extreme brightness contrast in the field of view. If you are in a glare condition for too long, people will experience visual fatigue and lack of concentration. The good classroom lighting equipment should not only be bright, but also uniform illumination, good color rendering, no stroboscopic, no glare. It is understood that there are currently more than 10 schools in Xiamen to complete the transformation of LED lighting system, precisely because of the idea of ​​improving classroom lighting.
“Most of the schools in Xiamen have installed direct drinking fountains and have done a good job in drinking water directly.†The researchers said that although the effluent quality of drinking water has national standards, the Ministry of Education needs to introduce more detailed indicators, such as The water temperature of the water dispenser, the safety of the machine, the height and quantity of the faucet, the frequency of replacement of the filter element, etc., are dedicated to allowing students to drink healthy and safe water.
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