Is Polarized glasses anti -ultraviolet rays?

Polarized mirrors can prevent ultraviolet rays, but the protection capacity is weak.

The primary function of polarizing Sunglasses is to prevent ultraviolet rays and filtrate polarized light. Good polarized Sunglasses lenses can block more than 90%of ultraviolet rays.UV prevention effects with polarized Sunglasses with "UV400" are the best effect.

The polarizing mirror is a lens manufactured according to the polarization principle of light. It can exclude and filter the scattered light in the beam, and anti -ultraviolet rays and filtration polarized light.A good polarizing mirror can achieve the color of the surrounding environment, the edges of the object are clear, can effectively identify different color signal Lights, and reduce the ultraviolet rays that are irradiated into pupils.

The Polarized mirror is better than the shutters, but it only blocked some light, and the light (including ultraviolet rays) that is basically parallel to the polarization angle of the polarization is still released. From the perspective of protection, it is equivalent to adding a layer of soft gauze to the window., It's just partially blocked.The biggest advantage of polarizing mirror is to block the glare interference and make the visual effect more clear, and the protection of ultraviolet rays is not as good as reflective Sunglasses and color transformer mirrors.

How to judge whether polarizing Sunglasses have anti -ultraviolet function

1. Look at the label

Obvious signs such as "UV" and "UV400" are seen on Sunglasses labels or lenses on UV prevention.The "UV Index" is also the effect of filtering from ultraviolet rays. This is a very important standard for buying Sunglasses.The light of the wavelength at 286nm-400nm is called ultraviolet rays. Generally speaking, 100%UV index is impossible. Most Sunglasses of the UV index are between 96%and 98%.

There are Sunglasses with anti -ultraviolet function, generally there are several clear ways:

(1) Mark the "UV400": This means that the lens cuts the wavelength of ultraviolet is 400nm, that is, the maximum value of the maximum value of the spectral ratio of less than 400nm in the wavelength () is not greater than 2%.

(2) Mark the "UV" and "UV": This means that the lens's deadline for UV is 380nm, that is, the maximum value of the maximum value of the spectral ratio of the spectral ratio below 380nm below 380nm is not more than 2%.

(3) Mark "100%UV absorption": This means that the lens has a 100%absorption function on ultraviolet rays, that is, its average transmission ratio in the ultraviolet interval is not more than 0.5%.

The Sunglasses that meet the above requirements are Sunglasses that truly have protection for ultraviolet rays.

2. Use banknotes to verify

In the absence of instruments, ordinary people can also detect whether Sunglasses have the function of anti -ultraviolet rays.Take a banknote, put the Sunglasses lens on the anti -counterfeiting watermark, and use the banknote pen or the banknote inspection machine to take a look at the lens.This pair of sun mirrors is anti -ultraviolet.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

1. Play basketballProtectWhat is the role

The finger protection is a piece of fabric for protecting the finger joints. It is one of the essential sports equipment for many basketball players. So what is the use of playing basketball and wearing a guardian?

For basketball, fingers are the parts of the common activity and one of the areas that are easily injured, especially professional basketball. They often collide with basketball. The damage of the opponent's finger joints is quite large.The opportunity is also very high. To protect it is not sprained or accelerated, wearing fingers are one of the effective ways.

The index finger is mainly to protect the joint of the opponent's finger. When the fingers are strongly impacted, the joints are limited to the bending amplitude, and will not change.The five fingers of the trauma occurred; and after bringing the fingers, it is not easy to slip because of sweating. In addition, many nursing fingers are now more beautiful and can also play a certain decorative role.

2. Is basketball guarding useful?

it works.

Dai Hu is very useful when playing basketball. Friends who often watch basketball games will find that many basketball players are Dai Hu's finger, mainly to protect; for those who play basketball, because sports are not in sports, there is no exercise.So fierce, the protective effect is not obvious, but the protection of the finger also helps to master the ball: the slow lens of basketball that generally seen on TV when flying in the air, the ball is rotating, the arc is high, it is beautiful and easy to enterBall, that is because most basketball players have a larger palm, and their fingers are slightly longer than ordinary people. When ordinary people play, because the palm of the hand is small, it is easier to master the finger.Khan will not slip.

Third, how to deal with the finger poke during basketball

When we played basketball, most of them pierced their fingers because of the overly intense impact.Of course, there is another situation that the nails are too long. When the nails are impacted, the fingers are very depressed and suffer.

When we play basketball, we remember to deal with nails first. Do not be too long, so it is easy to hurt others, and it is also easy to hurt ourselves.At the same time, before the basketball, we must fully prepare the fingers. If you have the conditions to slide the UA, you can wear a finger.

The fingers that occur in the basketball can be poked, and it can be divided into sprains, dislocation, fractures, tendon broken, and trauma (Skin cracking).

If a sprains occur, you need to make cold compresses first.When dislocation, we must tolerate the pain caused by dislocation, and let the medical staff pull their fingers straight to restore the original state.If your fingers are severely injured, fractures, and tendons, you must not move around, go to the Hospital immediately. This situation is not personal.

What are the items for civil defense emergency packages

1. Escape Tool

(1) Multifunctional flashlight

Hand -shaking power generation can be charged for mobile phones or cameras. It has the functions of radio, lighting, SOS for help lamps, and sound alarm. The power generation efficiency is high and the charging effect is excellent.

(2) Escape emergency rope

High tensileness and firmness, stronger hardness, higher safety factor, durable, and reliable quality.Suitable for high -rise buildings such as family, schools, hotels, restaurants, etc.When a disaster occurs, one end of the life rope is fixed with a life hook, and the other end is tied to the user's waist. The rope is grasped with both hands, and the wall slowly decreases until the ground.Disaster, this small rope may save the lives of countless people

(3) Safety buckle

Mountaineering buckle, dedicated to life rope, safety buckle specifications: 10cm wide 5cm load: 500 kg multifunctional Tool ax carry lightweight, complete function, strong durability, Outdoor travel, survival supplies.

(4) Multi -functional whistle

There are three functions: whistle, thermometer, and northern needle.When unexpected situations can be attracted by whistle, maintaining physical strength to get rescue quickly.

(5) Multifunctional Army knife

Generally, there are tools such as main knives, small knives, scissors, cylinders, wooden saws, small cones, plugging drills, toothpicks, and small tunnels.It is a good helper for wild travel and adventure climbing.

2. Emergency food

(1) Compressed biscuits

Compressed dry food comprehensive nutrition, maintain good physical fitness and easy to carry.

(2) Life drinking water

Emergency drinking water is made of deep groundwater meson switching treatment.Water quality meets the requirements of QS320906010803, which meets the requirements of ISO9001: 2000.

The packaging container meets the requirements of GB7105-86.It is a must -have in lifeboat and raft.Validity: Three years.Qualified by the Chinese Nantong office in China.Put of freshwater 5 100ml aluminum -plated film bag.

(3) Drinking water disinfection pill

For the sterilization of water from the people in the disaster area after the occurrence of natural disasters such as earthquakes, remove the chlorine in the water within a certain period of time to effectively eliminate chlorine flavor.

3. Mini first aid package

There are some simple disinfection treatment of trauma supplies. When accidental injuries, simple pre -Hospital treatment can be made, and more effective implementation of mutual rescue and rescue.

What is the role of civil defense emergency packages

Civil defense emergency packages are mainly to enhance the awareness of disaster prevention of residents and ensure that prevention of prevention is not occurred.Many provincial citizens' defense bureaus will use the public defense out -of -the -ware random draw to issue civil defense emergency packages to citizens, and citizens who are inconvenient to go out will also send them to the door.Civil defense emergency packages can deal with unexpected trauma in family life, for escaping and self -rescue when accidents occur, and simply handle injuries.

The probability of emergency packaging is very low. It may not be used in the whole life, but as long as it is used, you can save yourself or save others for a lifetime.

How to buy civil defense emergency packages to identify authenticity

1. Let the merchant present the relevant production qualifications

Civil defense emergency package is a product used for life -saving. If you purchase unqualified products, it is equivalent to buying a beautiful timing bomb and putting good looks. The emergency may be confirmed by the manufacturer's production capacity because the quality is not closed.Purchase physical stores allows merchants to show related qualifications; if you buy it in an online store, let the merchant send the qualifications to MAIL or QQ.Generally request the following qualifications:

(1) View whether it is a manufacturer or a trading enterprise, let the manufacturers present business licenses, project investment filing documents, environmental assessment documents, etc. If it is a trade or agencies, it is necessary to ask the manufacturer's formal authorization letter.

(2) Let the merchant present the "emergency package Production Performance Standard File Documents" to see if it is a filing document by the technical supervision bureau at or above the municipal level, and then use the standard number to conduct telephone and online inquiry authenticity.

(3) See if there is a quality system document to let the merchant show the ISO quality system certificate.

(4) Check the product production barcodes, nameplates, warranty cards, etc., and then scan emergency packages barcodes with mobile phones to trace the manufacturer information of the product, and refuse three products from the root.

2. Check the test report and qualifications of national compulsory emergency items

Civil defense emergency packages are assembled from a variety of life -saving items. If the items in the package are national compulsory products, but there is no corresponding qualifications and test reports, it will be a huge hidden safety hazard.Such as firing rope, escape Belt, escape straps, eight -character rings, fire extinguishers, fire escape masks, water purification slices, compressed biscuits, hemostasis bands, triangular scarfs, medical cotton balls, iodine cotton balls, and so on.If you do not ask for relevant test reports and qualifications, such as burning rope and escape Belt, you have your own design bearing bending; if the disaster occurs, the height on the 10th floor will be escaped, and the weight of the body is greater than the bearing gravity of the rope. The consequences are available.Think of it.Please do not have greedy or fluke. We can do such a test, that is, you throw a watermelon from the 10th floor to the ground, and then look at the results to clearly understand the consequences.

3. View related intellectual property and patent certificates

In order to prevent the purchased products from falling into the controversy of intellectual property rights, it is recommended to check which company the home emergency package intellectual property owned by the purchased home?In fact, the method is very simple, as long as you ask the manufacturer to ask for the corresponding product patent, product copyright, etc. to the manufacturer.If you buy a family bag, let the manufacturer show the patent of the family emergency package; if you buy a fire emergency package, recognize the manufacturer to show the fire emergency package patent, and so on.The disaster prevention and reduction industry belongs to the emerging and popular industries, because this has certain particularity.Therefore, the procurement department must consciously form a wall of justice.

4. It is recommended to go to the manufacturer to inspect or ask for video videos

The emergency package industry is mixed, and it is urgent to rectify the national government law enforcement agencies.The online search is basically imported from Japan, the United States, Germany and other original imports. In fact, it is the flaws of some foreign trade.Many self -proclaimed office addresses in Beijing, Shanghai, Shenzhen, etc., and then the factory in the factory is actually 100%leather bag company, which are all production and assembly of small workshops.Therefore, it is strongly recommended: For the private offices that need to be purchased in large quantities, it is recommended to go to the manufacturer to investigate. Before coming, you can agree with the business to see that if you do not see the production plant, you can reimburse the road fee, and you can even ask for the production of emergency packages.Carry out an industrial tourism.If the amount is small, it is recommended to ask the manufacturer to ask for live video or production line photos.Only in this way can we buy authentic civil defense emergency packages and ensure their own life safety.

At present, there are not many qualified manufacturers in domestic emergency packages. As for so many emergency package brands in the market, who is a trader and who is a manufacturer. It can be found through the above four steps.Reduce the risk of disaster and the minimum damage to the minimum protection of life in the first time.Perhaps the emergency package is usually not used, and it is a life -saving.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

How to wash down the down sleeping bag

Because the fillers in the down sleeping bag are down materials such as duck and goose feather, duck and goose down, they must pay special attention to the cleaning method when cleaning. For the uncommon fabrics such as down Sleeping bags, many dry cleaning shops cannot master its correct washing methods.Generally speaking, the down sleeping bag is cleaned once every 4-5 years. This interval can not only properly extend its service life, but also avoid the trouble of cleaning caused by too much cleaning.

During cleaning, it is divided into two types: hand washing and machine washing. When hand washing, you should choose a dedicated down detergent. After soaking in the instructions, wash it after soaking it. Do not rub it hard to avoid damage to the filling in the sleeping bag.If you choose machine washing, you must choose a dry cleaning company for a specialty washing bag. After getting the clean sleeping bag, you must lightly pat it to confirm the drying.The same method can also be used in hand washing. After washing, make sure the down sleeping bag is dry, and then gently pat it to let it show a natural fluffy state before it can be put into the storage bag.

precautions for Plel Sleeping bags cleaning

1. Please use a neutral detergent or special sleeping bag cleaning agent to clean your sleeping bag. Do not use strong cleaning agents, bleach and clothing.

2. Soak the sleeping bag before cleaning, and use a soft brush to gently brush the head, neckline, feet and other vulnerable parts to reduce cleaning work.

3. Sleeping bags can be washed with front roller washing machines, but the upper -style turbine washing machine cannot be used.Before the machine was washed, the sleeping bag was turned off, pulled all the zippers and buckled it.Select warm water and mild mode for washing machines. Do not use drying function. Strong centrifugal force will damage the fabric and lining of Sleeping bags.

4. Rinse the detergent and soap foam thoroughly.

5. After cleaning, do not pick up the down sleeping bag from one side, but pick up the sleeping bag from the bottom, otherwise it will damage the fabric and lining of the sleeping bag.

6. Frequent transitional washing will damage the warm -fitting medium of down to Sleeping bags. Therefore, please minimize the number of washing times while keeping cleaning.

7. Sleeping bags are suitable for drying and drying in a ventilated and dry environment to avoid strong sunlight. UV rays will damage the surface of the nylon.

8. You can use a large commercial dryer with a large capacity. You must keep low temperature drying and have enough room for Sleeping bags.

9. After drying, please continue to shake the sleeping bag and gently pat the duvet tangles to make the down completely stretch. After the sleeping bag is restored, put it in the storage bag.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

[riding on the knee pads] What is the importance of cycling knees?

What is the use of cycling knees

The ride knee pads are mainly exercise protection. Due to exercise, there is no fierce.There are various postures in the intense exercise. These intense postures easily hurt our knee joints, causing unnecessary damage or strain. Wearing knee protectives can protect the knee well and let the knees exercise during exercise.Keep it stable, while reducing the chance of knee injury.The other is the effect of keeping warm.Human knees are actually very fragile, especially in the cold winter.The role of the knee pad is to keep the knees warm and keep warm. Good warm knee -keeping, can ensure that the blood of the knee joint can circulate well, can resist rheumatism, etc., and prevent injuries when falling. Especially when the elderly go out in winter, wear knee pads.Can protect the knees resist cold wind and protect the elderly's knees from cold.

The braking effect of the knee pads.The knee joint is the place where the upper and lower leg bones are intersecting. There are half -moon boards in the middle. There is a Bone in front. The Bone is stretched by two muscles. It is very easy to slide before the legs of the legs.The influence is not strenuous, so the Bone can move normally in the knee.

Because the riding exercise has put too much pressure on the knee, coupled with the severe exercise in the cycling, it is easy to make the Bone be removed from the original part, which causes the disease of the knee joint.The knee pad can fix the Bone in a relatively stable position to ensure that it is not easily injured.

The above is the mild braking effect of the knee pads when the knee joint is not injured. After the knee joint is injured, the use of severe braking knee pads can reduce the bending of the knee, and maintain it from the thigh to the calf on a straight line to reduce the knee joint.Bending, thereby protecting the knee joint no longer aggravate the condition.

Some cyclists wear knee care while traveling, but often do not wear them short.I do nt know that frozen three feet is not a day s cold . The number of cycling is more frequently. For a long time, the knee joint will still get sick.When the lesion occurred, I regretted it.

The importance of long -distance ride knee pads

Generally speaking, most of the knee injuries are damaged by tissues that are not easy to regenerate because of cartilage and half -moon boards. These tissues do not quickly recover or grow like muscles.Glucose sulfate, but it is not advisable to take too much.Organizations such as cartilage and half -moon board are considered unspeakable for a few years or even more, so doing some targeted muscle exercises will help the rehabilitation and maintenance of knee tissues.However, many people who love cycling and often carry huge luggage Bags have tortured their knees because of high -intensity cycling, heavy load, and wrong riding positions, and finally the root cause.