Yellow light is a faint yellow light emitted by incandescent lamps used at home before. However, incandescent lamps have important defects in energy saving. 90% of its energy is converted into heat energy, and only 10% is converted into light energy, which has been eliminated by the state, but it is indeed the lighting with the least harm to the eyes.
The white light emitted by energy-saving lamps is not good for eyes. If there is purple light in the corner mirror, the advantage of LED lamp is mainly energy saving, which is not a big problem for short-term use, but it is not good for eyes for long-term use.
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Precautions:
Lamps and lanterns should be used in the classroom to avoid direct glare, and the uniform glare value should meet the national standards. Indirect glare caused by the mirror reflection of some decorative or desktop materials at home, such as metal and glass plate, will cause subjective reaction of visual discomfort, and sometimes it is even difficult to see the details of book fonts partially or completely. Some children are exposed to strong light for a long time because of their young age or insensitive subjective reaction, which makes their eyesight drop sharply.
Home layout should make full use of natural light and artificial lighting: desks for primary and secondary school students to read and do homework at home should be arranged near the lighting window as far as possible, and the desk lamp (eye protection lamp) on the desk should be arranged on the left side to avoid being blocked by the right hand writing, and general indoor lighting should not be blocked by objects to avoid the effect of background light on the reading area.
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