Can glass block ultraviolet rays?

Ordinary household glass is not effective in blocking ultraviolet rays.

Only part of it can be blocked.

glass, oxygen in the atmosphere, and the ozone layer in the air.

It has a strong absorption effect on ultraviolet rays. It absorbs sunlight.

Most of the ultraviolet rays are thus protecting the life of the earth from UV rays. To combat UV rays, organisms produce pigments to absorb UV rays, thus protecting the organism from UV damage.

If ultraviolet rays are exposed for a long time, it is easy to produce symptoms such as laxity, wrinkles, and microvascular emergence, and it will also expand the impact of UVB on **. It can shine through glass windows and curtains, even on cloudy days.

It can hit the skin on rainy days.

Ordinary glass cannot block all the ultraviolet rays, because the nature of glass is light transmission, with a certain refraction, but can not be completely refracted so there is a part of the ultraviolet rays through the glass.

Sun protection can be prevented in other ways:

1. Tomatoes are rich in the antioxidant lycopene, and a daily intake of 16 mg of lycopene can reduce the risk factor of sunburn by 40%. Ripe tomatoes work better than raw ones. It is more effective to eat some potatoes or carrots at the same time, and the carotene in them can effectively block UV rays.

2. Oranges are rich in vitamin C and vitamin P, which can enhance the body's resistance, increase the elasticity of capillaries, reduce blood cholesterol, prevent and treat hypertension and arteriosclerosis, and ensure good health in summer.

3. Lemon rich in vitamin C can promote metabolism, delay aging, whiten and lighten spots, fine pores, soften the stratum corneum and make the skin shiny. According to research, lemons can reduce the incidence of **cancer, and only about one spoonful of lemon juice per week can reduce the incidence of **cancer by 30%.

Ordinary architectural glass can block about 10% of ultraviolet rays, I don't know if your upstairs glass can be UV-proof, you have to test it specifically, a simple test can be tested with ultraviolet pendants for girls, if the pendant changes color proves that it is not UV-proof. You can also use a professional ultraviolet intensity meter to measure, if you are in Shanghai, you contact me, I will lend it to you for free, it doesn't matter, other places are exempt.

Glass cannot block ultraviolet rays, only a film to block ultraviolet rays is pasted on the glass.

Glass can block itUltraviolet raysEven ordinary glass can block ultraviolet rays, but its blocking effect is still relatively low, generally speaking, the blocking rate can reach about 10%. If it is a slightly better ordinary glass, it may be able to reach about 50%. Compared with some other glasses, ordinary glass may not be particularly good at blocking ultraviolet rays, there is a kind of plexiglass, this glass has a resin material inside, it has a certain effect on ultraviolet rays, and its effect is significantly better than ordinary glass.

How to choose glass.

1. The most important glass on the market is ordinary glass, which is slightly cheaper. In general, it can also be used as window glass. But there is one point that the sound insulation effect of this ordinary glass is not particularly good, if your family lives on the side of the road, there will be a certain amount of noise when you choose ordinary glass, and its sound insulation effect is relatively poor.

2. If you want a slightly better sound insulation, you can choose a hollow type, and the effect will be more prominent. Either choose a vacuum, which is undoubtedly the best, consisting of two pieces of glass, in which the air is pumped out to form a vacuum layer. And if the sound encounters a vacuum, it can't be transmitted, the effect is very good, and it also has the advantage that it is not easy to break.

3. If there are some children in the family, it is best to choose explosion-proof glass, because even if this explosion-proof glass is broken, the glass slag will not fly and will not hurt the children.

Glass blocks ultraviolet rays.

Ordinary glass can block ultraviolet rays, but its blocking effect is still relatively low, generally speaking, the blocking rate can reach about 10%. If it is a slightly better ordinary glass, it may be able to reach about 50%. Compared with some other glasses, ordinary glass may not be particularly good at blocking ultraviolet rays, there is a kind of plexiglass, this glass has a resin material inside, and its blocking effect on ultraviolet rays is significantly better than ordinary glass.

Types of glass

1. Flat glass

Flat glass is a traditional glass product, mainly used for doors and windows, playing the role of light transmission, wind blocking and heat preservation, and has good transparency and smooth surface, its visible light reflectivity is about 7%, and the light transmittance is between 82% and 90%.2. Embossed glass

Patterned glass, also known as patterned glass and knurled glass, is mainly used in doors and windows, indoor partitions, bathrooms, etc., the surface of the patterned glass has a pattern, which can transmit light, but can block the line of sight, that is, it has the characteristics of light transmission and opacity, and has excellent decorative effects.

3. Insulating glass

Insulating glass is composed of two or more layers of ordinary flat glass, filled with dry gas in the middle, because there is a certain cavity, and has good thermal insulation, heat insulation, sound insulation and other properties, mainly used for heating, air conditioning, silencing facilities of the outer glass decoration.

4. Tempered glass

Tempered glass, also known as tempered glass, is a method of rapid cooling after heating to a certain temperature, or a special treatment of glass by chemical methods, and its characteristics are high strength.

Glass cannot block ultraviolet rays, only a part of them.

Most glass has the ability to absorb ultraviolet rays, but the effect of anti-ultraviolet rays is not very good, the general ordinary household glass has a certain blocking effect on ultraviolet rays, can block part of the ultraviolet rays, but can not achieve the effect of blocking all ultraviolet rays, plexiglass for ultraviolet rays is obviously more than ordinary glass, still can not completely isolate ultraviolet rays.

With the function of anti-ultraviolet is anti-ultraviolet glass, also known as ultraviolet filter glass, this kind of glass is suitable for office buildings, furniture, libraries and other places, can filter ultraviolet rays, but still can not completely block ultraviolet rays.

The method of choosing glass

1. Look at the sound insulation effect

For example, double glazing has a better sound insulation effect than single glazing.

2. Look at the material

To choose durable glass, tempered glass is harder than ordinary glass, not easy to be smashed, strong impact resistance, suitable for children at home to choose this kind of glass.

3. Look at the thickness

Thicker glass can have a sound insulation effect, and the thermal insulation performance is also better.

4. Look at the gloss

If the gloss of the glass is not good, it will affect the lighting effect of the room, and if the glass surface is not smooth enough, it is easy to stick dirty.

5. Look at the endothermic effect

Choose heat-absorbing glass, which can block the sun well, and the heat insulation effect is very good, and people will not be very hot when sitting at home.

Yes. Ordinary glass can also block ultraviolet rays, but the blocking effect is still relatively low, generally speaking, the blocking rate can reach about 10%. If it is a slightly better ordinary glass, it may be able to reach about 50%.

Compared with some other glasses, ordinary glass may not be particularly good at blocking ultraviolet rays, there is a kind of plexiglass, this glass has a resin material inside, and it has a certain effect on ultraviolet rays, and the effect is significantly better than ordinary glass.

Precautions for glass maintenance.

Do not hit the glass surface hard, in order to prevent scratches on the glass surface, do not rub with hard objects, and do not collide.

Avoid moisture, keep away from stoves, and isolate from chemical reagents such as acids and alkalis to prevent corrosion and deterioration.

During daily cleaning, wipe with a wet towel or newspaper, if there is a stain, you can wipe it with a towel dipped in beer or warm vinegar, and you can also use the best glass cleaner on the market, avoid cleaning with a strong acid and alkaline solution. In winter, the surface of the glass is easy to frost, and it can be wiped with a cloth dipped in concentrated salt water or liquor, and the effect is very good.

The above content refers to Encyclopedia - Glass.

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Ordinary glass has a partial blocking effect on UVA, which can effectively block most of the UVB. More specifically, ordinary glass can block more than 90% of ultraviolet rays with wavelengths less than 300nm, but can allow more than 90% of ultraviolet rays with wavelengths greater than 350nm to pass through. For UVA with wavelengths between 350 and 300 nm, the blocking effect is between 10 and 90%.

Unlike regular glass, quartz glass and silica glass are able to pass through ultraviolet light. So, if you can see the UV lamps used to process DNA gels in the lab, the lampshade or the table top of the lamp is made of quartz glass. Another type of glass is plexiglass, or plexiglass, plastic glass.

This type of glass has a significantly better blocking effect on UVA than ordinary glass.

The sun's ultraviolet rays can penetrate through glass. Through the glass, as long as it is not too ultraviolet-blocking transparent glass, the exposure to ultraviolet rays should be similar to that of no glass, the sunlight is too strong, and the part reduced through the glass can be ignored.

Light is a radiation wave, and ultraviolet light is one of the wavelengths of light waves, in fact, wherever there is light, there is ultraviolet light. It's just that the UV intensity of various light sources varies. Sunlight is the strongest ultraviolet light we can receive on Earth.

So in fact, the sun's ultraviolet rays can penetrate through the glass. Just look at how well the glass blocks light waves. There is a special anti-ultraviolet glass, with some special materials, which absorbs most of the ultraviolet rays, but it is impossible to absorb all the ultraviolet rays, only the strength of the ultraviolet rays obtained.

Through the glass, as long as it is not too much ultraviolet transparent glass, the exposure to ultraviolet rays should be similar to that without glass, the sunlight is too strong, and the part reduced through the glass can be ignored

As long as people are exposed to light, they can absorb ultraviolet rays and carry out metabolism. Of course, occasional sunbathing also has a good effect on people's metabolism, but it should be noted that too long sunshine is easy to burn, and long-term exposure to the sun is also easy to leave the hidden danger of cancer.

Glass can't block ultraviolet rays, there may be special glass that can reduce its radiation intensity to a certain extent, in fact, ultraviolet rays are everywhere, but the intensity is different.

Light-colored glass cannot block ultraviolet rays, and dark-colored glass can weaken ultraviolet rays.

It can block some ultraviolet rays.

Ordinary glass should not be OK, consult professionals, shopping ** customer service can also be.