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·What is the principle of mobile phone anti-peeping film?
Do you know how anti-peeping film prevents others from peeking at their mobile phone screen?
In fact, the principle of anti-peeping film is similar to that of blinds. The anti-peeping screen reduces the structure of the blinds by tens of thousands of times, and controls the visual angle of the screen through the parallel arrangement of grating structures.
When the light on the mobile phone screen is incident vertically on the anti-peeping film, it can pass through without obstruction; as the angle of light incident increases, the light is gradually blocked by the blind structure, and the transmitted light decreases accordingly.
Therefore, only users facing the screen can receive enough light to see the screen clearly. Bystanders at a certain angle to the screen receive weaker light and look pitch black.
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WeChat public account: Curious Shrimp Cold Knowledge
· "Carnivorous" plant in plants?
In nature, there are a few plants that capture animals to supplement their nutritional needs. For example, Nepenthes that can prey on insects. In addition, Venus flytrap , felt moss , cherry cherry , insect-catching cherry , cherry algae, etc. can also capture animals.
Most of these "carnivorous" plants that capture animals grow in barren land or swamps. Since there is no sufficient mineral supply, they have to "learn" this special ability.
Carnivorous plants usually have three conditions: one is to have the fragrance of trapping animals or be disguised, such as smell, color, nectar, etc.; the second is to have traps used to capture animals; and the third is to secrete digestive fluid that can dissolve animals.
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WeChat public account: Curious Shrimp Cold Knowledge
· What is the most suitable dress color for summer?
Many people think that it is best to wear white clothes for summer, but in fact, it is better to wear red clothes.
Because red visible light waves are the longest, it can absorb large amounts of ultraviolet rays in sunlight, protect the skin from harm, prevent skin aging or even cancer; other colors, including white, have weaker effects.
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WeChat public account: Curious Shrimp Cold Knowledge
·Why do you get pleasure from reading?
People realize in reading that it is Goethe 's "Young Wright's Troubles" that makes people understand what youth and unrequited love means; it is Proust 's "Remembrances like water years" that makes readers understand their true face when they are in a jealousy.
But the value of great books is not just about describing feelings and characters similar to those in our lives; its value is also about being able to describe these feelings and characters in a more perfect way than us. It can provide some feelings, and although we can clearly realize that these are our own perceptions, we cannot express them.
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WeChat public account: Curious Shrimp Cold Knowledge
· How to be wary of "death from overwork" in your eyes?
You must have experienced visual fatigue, such as dry, astringent, sour, tired, and tears... Excessive use of eyes will not only affect emotions, but also lead to headaches and nausea. The most serious thing is the "overwork death" of the eyes: temporary blindness and permanent blindness.
The eyes are usually "death from overwork": 1. Death from edema. That is, long-term use of the eyes and inattention to rest leads to retinal edema, loss of vision, and unclear vision.
2. stroke death.That is, retinal artery blockage , and blood vessel blockage can easily lead to permanent visual damage. Untimely treatment may even lead to semi-blindness or permanent blindness.
3. Nervous death. That is, eye nerve disability. Long-term excessive fatigue of the eyes may induce inflammation, bleeding, and edema, block the eye nervous system, and even compress nerve cells, leading to nerve atrophy or even complete disability, and blindness is not far away.
Of course, the "overwork death" of the eyes is caused by long-term excessive strain, so you must take care of your eyes and let it rest more.
good | Qi | Shrimp | Cold | Zhi | Zhi |
WeChat public account: Curious Shrimp Cold Knowledge
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