Why should you bring snow goggles in the snowy mountains, and why should you wear sunglasses when pl

Prevent snow blindness (the eyes are reflected by snow and shine into the eyes).

To prevent snow blindness, protect your eyesight.

A portion of the total radiation reaching the ground is reflected back to the atmosphere by the ground, which is called ground-based reflected radiation. The magnitude of the ground's reflective capacity, expressed as the ratio of the total upward reflected radiant flux to the total incident radiant flux, is called the ground reflectivity. The magnitude of the reflectivity of the ground depends on the nature and state of the ground.

Generally speaking, the reflectivity of dark soil is smaller than that of light soil, the reflectivity of moist soil is smaller than that of dry soil, the reflectance of rough surface is smaller than that of smooth surface, the average reflectance of land surface is 10-35, and the reflectance of fresh snow surface is the largest, up to 95.

In the snow-capped mountains, where such a high reflectivity exists, looking directly at the snow is like looking directly at the sun, and it is easy to be reflected by strong light, resulting in snow blindness. In turn, the eyelids are red and swollen, the conjunctiva is hyperematic and edema, there is a severe foreign body sensation and pain, fear of light, tearing, inability to open the eyes, and blurred vision. In the end, it has a great impact on the body and safety.

Therefore, it is necessary to wear snow goggles in the snowy mountains to prevent snow blindness.

I found that many people like snow, and when it snows, we feel very happy. Everyone will also be very happy to run in the snow, but by chance I see an article in the snow, you must wear sunglasses, otherwise it will hurt your eyes, why is this? I'm going to talk to you about it today.

In fact, everyone carefully found that many people wear sunglasses when skiing, and at the beginning, they just thought they were pretending to be cool, and later they learned that wearing sunglasses actually has a certain protective effect. Because the snow can reflect the sun, and when we are sliding, there will be gusts of cold wind blowing in it, so it will cause everyone's eyes to be very uncomfortable. At this time, if you don't wear sunglasses, it will cause tears to flow, and it will also cause your eyes to be very uncomfortable because of the reflection of sunlight from the snow.

Everyone must pay attention to keeping warm when playing in the snow, especially in many areas, the weather is relatively cold, if the temperature drops faster, everyone does not pay attention to keeping warm, there will also be a cold. There is also a situation to pay attention to, that is, you should not be in some such dangerous places, such as under the eaves, because when it snows, the temperature in many areas is relatively low, and there may be a lot of ice picks under the eaves, once these things fall, it will also cause great harm to everyone's body.

Although it is said that it is very fun to have a snow day, you must be careful to change your clothes after playing in the snow. Because snow can cause our clothes to get soaked after chemotherapy, then we will feel very cold. And when playing in the snow, it is best to wear a glove, so that your hands will not feel very cold, many people will have swollen hands in winter, so wearing a glove can also protect their hands.

Ski goggles are also required for other outdoor sports in snowy conditions. The human eye is the weakest organ of the body. The snow environment where skiing is located is easy to cause snow blindness, and it is easy to hurt glasses when falling during high-speed sports, so a good ski goggles should have the following functions:

1. To prevent the damage of cold wind to the eyes, the use temperature should reach minus 30 degrees, and the frame lens should not be brittle.

2 High-quality mirror coating prevents UV rays from burning the eyes and effectively filters harmful light to glasses. All while maintaining brightness and an open field of view. 3. The air circulation design and anti-fogging materials ensure that the mirror surface does not fog, and the glasses should be ergonomic and not shaky.

The lens belt is elastic and suitable for the length and width. 4 Frame lenses are made of a soft and special material, often polycarbonate (a special plastic). The glasses are only deformed under the action of external force, and they should be quickly restored to their original state when the external force is removed.

5 Even if the glasses are shattered after an accidental fall, they should not cause damage to the face. In some regions there are standards for impact pressure. 6 Players with glasses are advised to choose ski goggles that can be worn with glasses.

If you're skiing with hidden glasses, be sure to keep your eyes moist to avoid eye strain.

Some technical vocabulary for ski goggles.

Spherical and cylindrical: are the two terms that distinguish spectacle lenses, which are very easy to understand, spherical lens lenses are spherical protrusions, and cylindrical lenses are cylindrical protrusions. The design principle of the spherical mirror is derived from the fisheye, which guarantees a wider field of view while blocking harmful extraneous light in all directions.

Double-layer and single-layer: Another term that distinguishes lenses, the optical principle makes double-layer lenses better UV protection than single-layers.

Coating: The coating of ski goggles is on the inner layer of the concave surface, which ensures that it is not easy to scratch the coating when used. The role of the coating is to block harmful light and prevent fogging.

Wearing a helmet: Ski goggles are often used in conjunction with helmets, such as AXE's AX980-WCM and AX460-WD, where the interface of the lens strap is designed to be movable, so that the angle and position can be adjusted when wearing the helmet. (The interface is designed to be fixed and can be used with a helmet, but it is not very comfortable.) )

The function of snow goggles is to protect the eyes from the cold wind when skiing at high speeds, and secondly, falling snowflakes falling into the eyes can also cause frostbite or scratches from the first snowflakes. Therefore, be sure to wear glasses when skiing.

This is a must-wear, and it's also a must-wear. Because of the speed of skiing, the reflection of sunlight on the snow surface will be extremely dazzling, and many factors such as strong winter winds can be dangerous if there is no protection of snow goggles. Therefore, you must wear special ski clothes, snow hats and snow goggles for skiing.

Of course, it's not good if the snow hurts your eyes when it's snowing, or if you don't do it properly.

Be sure to wear snow goggles when skiing, he can protect his eyes well. No harm was taken. So be sure to wear it.

Definitely, one to protect the eyes. Twenty in the snow without colored glasses can cause snow blindness, which is more dangerous.

Oh, yes! I think glasses have to be worn! Because it protects the skier's eyes! It can play a preventive role in dangerous weather! It can effectively prevent snow from falling into the eyes!

Yes, without goggles, the wind and snow will be blinding, which is an extreme risk factor for skiing.

Of course, the snow is very dazzling. You must protect your eyes in strong light, otherwise you will break your eyes if you don't grab the light. Then, the skiing speed is fast and the wind is biting. Yes, eyes too. It's a bit unbearable, so I have to bring it. Protect yourself.