Light hazard refers to the side effects of specific light applied to living things in a specific environment. Common light hazards that have strong biological effects include ultraviolet light hazards and blue light hazards.
Since the use of specific light in a specific environment can produce light hazards, that is to say, light hazards have advantages and disadvantages.
UV hazards
When strong ultraviolet rays act on human skin, photodermatitis will occur, and erythema, blisters, and edema will appear on the skin. Sunlight contains a large amount of ultraviolet rays, most of which are absorbed by the ozone layer, and only a small part of it irradiates the ground. As atmospheric pollution continues to become serious, the earth's ozone layer is destroyed to form an ozone hole, and the impact of ultraviolet rays on humans becomes more and more obvious.
In addition to the harm to humans, ultraviolet light also has its benefits. It can have an effect on humans, so it can also have an effect on other organisms, such as sterilization and disinfection with ultraviolet rays.
Blue light hazard
When the naked eye looks at the strong blue light for a long time, it will cause dizziness and nausea, and even directly cause the disease of the eye lens.
But for the growth of plants, blue light has a very important role. LED plant lights are made of red and blue LED plant light chips according to the light demand of plant growth. This kind of LED plant lights can not only help plants grow. , Because its light is not liked by animals, which leads to plants under LED plant lights, the probability of pests appearing is greatly reduced, and the yield and quality of crops can be greatly improved.
In fact, lights are the same as other substances in the world, with pros and cons, depending on how they are used.
After the advent of artificial light sources, the world's average myopia rate has risen linearly. The myopia rate of high school students in my country has exceeded 60%, and the young population with irregular biological clocks has exceeded 85%.
However, the reasonable use of lights in home life will not only harm your health, but will also be beneficial to your health. Warm colors and low color temperatures are used in home decoration, which can make people feel more at home and make people feel more warm. In general Writing is not particularly necessary to turn on the bright spotlights as little as possible. The use of orange light in the restaurant will increase one's appetite.
In fact, for humans, it is just like the description in Gu Long's novels: "The sword enters the heart, and the sword has no fault." Light cannot be called a hazard, but humans themselves are endangering themselves.
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