Can you get a tan while sitting in a glass room? Can t ultraviolet rays pass through glass?

I can only you not necessarily. It mainly depends on what kind of glass the glass of the glass house is. White glass definitely has ultraviolet rays, but if it is said to be low-e glass, it can be said that it is relatively rare, because this kind of glass has certain parameters and isolation numbers for each index.

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%.

Ultraviolet light can pass through a single piece of ordinary clear glass. If it is low-e insulating glass, it will be reduced by a part, but if it is laminated glass, it will be reduced by 99%. <

I am not in a position to discuss whether an individual will be tanned or not, because there are many reasons why the human body produces melanin, and even if we only discuss it from the perspective of light, it is not only ultraviolet rays that induce an increase in melanin. So the following only ultraviolet light can penetrate the glass. Glass is a homogeneous and transparent substance after silicate fusion.

The main chemical components are silicic acid, boric acid, phosphoric acid, as well as soda, potassium oxide, lime, etc. There are many types of glass, and since the subject is asking about glass houses, I will mainly mention the types of glass that can be used in the project. Sunlight contains ultraviolet band 10-400 nanometers, but the 10-100 nanometer segment is difficult to propagate in the air, and the 100-200 nanometer segment is almost completely absorbed by the ozone layer, so only the 200-400 nanometer range (UVA and UVB) of sunlight outside the glass remains.

So there will still be a fairly small fraction of the UV rays that can penetrate the glass and enter the room. <>

No.

Ultraviolet light is a low-energy electromagnetic radiation with a wavelength range of 240 280 nm and an optimal wavelength of 260 nm, which is consistent with the absorption spectrum of washed DNA. Its bactericidal principle is that ultraviolet rays are easily absorbed by nuclear balance proteins, so that the adjacent bases on the same spirochete of DNA form thymine dimer, thereby drying up the replication of DNA, resulting in bacterial death or mutation.

Ultraviolet light has poor penetration and can be affected by dust particles and humidity. If there are many dust particles in the air, the sterilization efficiency will be reduced; As the relative humidity increases, the sterilization efficiency decreases.

Sunlight contains a lot of ultraviolet rays, but it can't penetrate the glass panes of the windows and enter the room. In the electromagnetic spectrum, radio waves, infrared, visible light, Roentgen rays, and rays can all be judged to pass through the glass plate, but they penetrate in different ways.

No. Ultraviolet.

Although it has a sterilizing effect, it has poor penetration of glass. A layer of two-millimeter glass is enough to block 80 percent of the ultraviolet rays of the pants; If it is two layers of glass, the UV rays are completely blocked. <

Ultraviolet rays do not pass through the glass. Although ultraviolet light has a germicidal effect, its penetration of glass is very poor. A layer of two millimeters of glass is enough to block 80 percent of ultraviolet rays; If it is two layers of glass, the UV rays are completely blocked.

So, if you bask in the sun in the house in winter or early spring, thinking that this can also kill bacteria, it is wrong. Whether it's a harsh winter or a hot summer, you should stick to the sun outside. In this way, you can not only exercise your body, but also prevent various epidemic infectious diseases.

Glass can block itUltraviolet. Even 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.

Ultraviolet rays can penetrate glass and tan.

Although the glass can block part of the ultraviolet radiation, there is another part of the ultraviolet radiation will enter the room through the glass, which will lead to tanning and aging, so it is necessary to do a good job of sun protection on weekdays.

Ultraviolet rays can be divided into three types according to the wavelength, and the separation is long-wave UVA, medium-wave late UVB, and short-wave UVC. UV index.

Generally, the number 0 15 is used, in which the greater the index value of ultraviolet rays, the greater the damage to the human body caused by ultraviolet radiation, and the stronger the damage to ** in a short period of time.

Factors influencing UV penetration include:

1) The penetration of ultraviolet rays is poor, and it can be affected by dust particles and humidity. If there are many dust particles in the air, the sterilization efficiency will be reduced; Relative humidity.

If it increases, the sterilization efficiency will also decrease.

2) The penetration of ultraviolet rays in the liquid can be reduced with the increase of the depth of the liquid, and the impurities in the water have a greater impact on the penetrating power, and the dissolved salts, sugars and various organic substances can reduce the penetration of ultraviolet rays.

3) Penetration of solid matter, somewhat visible light.

Objects that can be penetrated, ultraviolet rays are impermeable, such as glass, window paper, PVC film, dust, etc., can block the transmission of ultraviolet rays, and affect its germicidal effect.

Ultraviolet rays can penetrate glass and tan. Although the glass can block part of the ultraviolet radiation, there is another part of the ultraviolet rays that will enter the room through the glass, which will lead to tanning and aging, so you need to do a good job of sun protection on weekdays.

There are glasses on the market that can completely filter out ultraviolet rays**, but it will be higher on **.

Ultraviolet rays can be divided into three types according to wavelength, and the band is long-wave UVA, medium-wave UVB, and short-wave UVC.

The ultraviolet index is generally expressed with the number 0 15, in which the greater the index value of ultraviolet rays, the greater the harm of ultraviolet radiation to the human body, and the stronger the damage to ** in a short period of time.