What are the huge hazards of "fluorescent lamps" used in classroom lamps?
1. The "stroboscopic effect" of classroom lamps seriously endangers students' eyes
The lamps used in classrooms in most schools in China are directly installed with exposed fluorescent tubes, and the light of these fluorescent lamps will directly stimulate the eyes of students, causing glare, which greatly distracts students from studying in the classroom and makes students’ eyes The learning efficiency is seriously reduced.
Moreover, exposure to such unprotected fluorescent lamps in the classroom for a long time will cause video fatigue for the people in the classroom, and it is very easy to induce eye diseases such as myopia.
Magnetic ballast is a component installed in most fluorescent lamps, which will cause serious light stroboscopic effect of fluorescent lamps. In order to adapt to the change of the frequency of the light, the human eye will continuously adjust itself. The long-term self-regulation of the optic nerve is equivalent to the eyes "doing exercise" all the time. After a period of time, the eyes will feel extremely tired. .
Students spend most of their time in school classrooms facing blackboards and textbooks. Using their eyes for a long time will definitely cause eye damage.
2. The "color rendering index is too low" of classroom lamps
Another disadvantage of common classroom lamps is that the color rendering index is too low!
The color rendering index of fluorescent lamps in most school classrooms is generally around 70 (national standard: the color rendering index of the light source should not be less than 80). Such a low color rendering index will cause visual color distortion and affect students' learning. Especially in the professional classrooms that are sensitive to color requirements such as art, chemistry, and handicraft, a too low color rendering index will affect the students' eyes to recognize the color of the object, so that the object cannot show its true color. If this situation continues , it is easy to cause serious vision problems and eye diseases such as color blindness and color weakness.
3. The terrible "blue light hazard" of classroom lamps:
China's domestic classrooms basically use high color temperature (6500K) fluorescent tubes, and the national standard requires classrooms to use a light source with a color temperature of 3300-5500K. The high color temperature is because the light color is too white, it is easy to cause students to be excited and easily fatigued.
At the same time, domestic classroom lighting basically has very terrible "blue light hazard" and "ultraviolet radiation". Blue light can cause irreversible and irreparable damage to the retina of students' eyes.
With so many hazards from classroom lamps, it is no wonder that the proportion of Chinese students with myopia is terribly high.
It is very sad to see that there are very few students on campus now who do not wear glasses.
