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.
Além disso, a exposição a essas lâmpadas fluorescentes desprotegidas na sala de aula por muito tempo causará fadiga de vídeo para as pessoas na sala de aula, e é muito fácil induzir doenças oculares como a miopia.
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. .
Os alunos passam a maior parte do tempo nas salas de aula da escola, de frente para quadros-negros e livros didáticos. Usar os olhos por muito tempo certamente causará danos aos olhos.
2. The "color rendering index is too low" of classroom lamps
Outra desvantagem das lâmpadas comuns de sala de aula é que o índice de reprodução de cores é muito baixo!
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.
Com tantos perigos das lâmpadas de sala de aula, não é de admirar que a proporção de estudantes chineses com miopia seja terrivelmente alta.
É muito triste ver que há muito poucos alunos no campus agora que não usam óculos.
