Ultraviolet rays penetrate glass. Do window panes pass ultraviolet light? Properties of ultraviolet rays

With the advent of cold weather, every girl is concerned about the question of how to make the hairstyle look good and keep its shape under the headdress for as long as possible. Many people think that it is almost impossible to solve this problem.

Choosing a hairstyle for a hat is a very difficult task that requires strength and patience. It is not enough to choose a headdress that suits your face shape, you also need to choose the right hairstyle. In this article, we will talk about five hairstyles that will perfectly make friends with your hat and make you feel like a real queen.

beach waves

Despite the seemingly summer name, beach waves will be the perfect option for a winter hairstyle. To make such a hairstyle you will need no more than 15 minutes. Using a curling iron, curl your hair from the middle of its length and fix the curls with hairspray.

tail-harness

For owners of long unruly hair, a fashionable ponytail will be a good idea. You can do both low and high hairstyles. Divide your hair into two equal parts and wind each strand around your finger counterclockwise. Then twist the bundles one on top of the other clockwise and secure the hairstyle with an elastic band or hairpin.

Volume braid

This hairstyle is perfect for owners of both medium and long hair. In order to make such a stylish hairstyle, tie a braid, leaving a few strands near the face. Then wrap the base of the tail with the remaining strands, thereby covering the elastic. To keep the hair well, you can fix it with invisibility.

tail flashlight

Another beautiful hairstyle that perfectly retains its shape under a headdress is a ponytail. If you want your hairstyle to look great even in the evening, you should make a low ponytail. To do this, collect the hair in a ponytail and fix it with thin elastic bands at a distance of 10 cm from each other. It is better to leave the hair between the elastic bands free so that, by removing the hat, you can give the hair the desired shape.

side french braid

If you are tired of your hair losing its shape and looking like a small bun of straw after wearing a hat, take a look at the French braid. To create an incredibly delicate hairstyle, French braid to the side, weaving the hair at the face and at the back of the head. This hairstyle can be easily corrected and fluffed with your hands.

Such simple hairstyles will help you stay beautiful despite the headdress and gloomy, cold weather.

Increasingly, on TV or from friends, each of us has to hear about skin cancer, which occurs as a result of prolonged exposure to sunlight.

That is why you have to think about whether it is possible to tan through the glass of a window or a car, and whether it is necessary to protect the skin with special creams while standing behind the glass.

About the types and properties of UV rays

Do you want to understand whether it is really possible to tan through glass? Then why not start by understanding how a tan appears on a person’s skin?

First of all, we note that it is a protective reaction of the skin when the rays of the sun begin to act on it, however, this reaction can not be caused entirely by them, but only by their ultraviolet spectrum.

Since there are cells in the skin that contain a special pigment - melanin, then as soon as the rays act on it, the pigment is activated, the skin darkens, preventing the harmful rays from penetrating further. This property of the pigment causes the appearance of darkening of the skin, which is commonly called a tan.

Now let's move on to the types of rays. It is known that the rays of the ultraviolet spectrum are of three types - these are types A, B and type C.

1. If we talk about the most dangerous of them, then type C is considered to be such, since its impact can lead to the complete destruction of all life on our planet. Much to my relief, this radiation is successfully neutralized by the atmosphere, and therefore the entire surface of the Earth, where people and animals live, is out of danger.
2. Compared to type C, radiation of another type, B, is not so dangerous, however, this does not mean at all that it cannot have a bad effect on various living organisms. But still, you should not be afraid, because a caring atmosphere in this case also saves our planet, delaying as much as 90% of this radiation. The remaining ten, although they reach us and are also responsible for the occurrence of sunburn, are still living organisms, thanks to the properties of their skin or wool, able to protect themselves from them.
3. It remains to deal with the last type of radiation - A. Despite the fact that its atmosphere practically does not delay and therefore it freely reaches the surface of our planet, this radiation is rightly considered the safest and softest of all those already listed. It does not even cause any protective reactions in your skin and does not activate the production of melanin in it. All that is subject to him is to cause a slight darkening (and then under the condition of prolonged exposure) of the skin. Don't worry, it won't affect her in any way.

How to get a tan through ordinary window glass?

Whether it is possible to tan through window glass or not depends on what properties it has.

The bottom line is that window panes pass only ultraviolet type A. Given this fact, you will not be able to tan through the glass.

Sometimes, of course, there are cases when a person spends some time under the sun's rays that pass through the glass, and then finds a light tan on his body, and then he is completely sure that he tanned through the glass. However, this is not quite true.

Such a tan occurs according to the following principle: any person who is indoors still sometimes goes outside - he either goes outside to smoke during a working break, or goes to a store, etc.

While he is outside, especially during the warm season, he receives some amount of ultraviolet radiation of type B, as a result of which the skin becomes tanned.

When it gets cold outside, people rush to dress warmer and therefore they are less susceptible to radiation, and melanin returns to its normal state. But still, some charged pigment remains (only it is no longer activated), therefore, when it is again exposed to type A radiation, the charged melanin is immediately activated.

As a result of this chain of events, the skin becomes slightly tanned, although this darkening passes rather quickly.

Agree, it is rather difficult to call all this a tan seriously - it can be more attributed to the so-called residual effect.

Is it possible to get a tan through a car window?

Professional drivers often notice how their skin darkens after some time behind the wheel of a car. Moreover, some parts of the body may be darker (for example, hands and face), while others are much lighter.

But some people, on the contrary, are completely sure that it is absolutely impossible to get a tan in such a strange way. So who is right in this dispute?

The truth is somewhere in between, it is that the way automotive glass interacts with ultraviolet rays, it does not differ from ordinary glass.

In other words, automotive glass, as well as glass on the windows of houses and other buildings, can only transmit ultraviolet type A.

However, this is the main mystery: such radiation can really cause darkening of the skin, but this interesting process will take ten, and perhaps even a hundred times more time than if you decide to sunbathe on the beach or in the solarium.

So is it possible to tan through the glass of a car? The conclusion is very simple: the more time a person is driving his car, the higher his chances of getting a tan through the glass, but, again, the severity of darkening of the skin also depends on the time spent behind the wheel.

Other people in his car should not even worry about this problem, because the passengers still do not sit in it as often as the driver.

If for some reason you want to tan through ordinary or car glass, then first you have to take a walk under the sun's rays on the street, and only then sunbathe through the glass. Of course, you will have to stock up on a lot of patience.

Do I need sunscreen if sunbathing through glass?

You need to worry, perhaps, only to those people whose skin is prone to the appearance of age spots, because anything can provoke them.

For such people, being in a car for a long time or generally under the influence of sunlight, it is better to use a special sunscreen - the weakest of them will do.

Even if you use your regular day cream, it will still protect your skin, because such creams also contain a UV filter.

Apply a small amount of protective agent on the neck and face - these areas are considered the most vulnerable and it is there that unpleasant age spots most often appear.

Do not panic if there is no protective cream or other similar remedy at hand. The human body has developed another additional protection that saves us when exposed to solar radiation no worse than melanin.

Outside the house

Sunny days

However, here is an example from life, indicating whether it is possible to tan through glass. One man constantly practices meditation in the sun. Especially in autumn and winter. In the morning, he sits in a comfortable chair right in front of the window. He closes his eyes and looks at the sun through his eyelids, getting thirty minutes of warm pleasure. The sun nicely caresses his face. Now imagine the picture that in the middle of winter his acquaintances are looking at him in surprise. And then they try to find out where he is so tanned. “Definitely not in the solarium,” he replies.

With a slight tan

Ordinary glass does not block ultraviolet soft UV-A rays with a range of 315 to 400 nm. But the very method of getting a tan is very inefficient. The process is rather slow. Although you can still use it. If a person has enough patience, then it is quite justified. Especially if they are people with a good content of melanin in the skin. Is it possible to tan through window glass? Luxurious tan, of course, will not work. But to remove acne on the face, according to knowledgeable people, it will be quite possible. A shade of a healthy tan is also possible. As you know, its appearance is directly related to the presence of melanin pigment. In turn, the appearance of the latter is possible when ultraviolet rays touch the skin. The "color" of a tan protects the body from sunburn.

Ultra-violet rays

There are three types of ultraviolet. So, ultraviolet C destroys all life, but is neutralized by the Earth's atmosphere. Ultraviolet B, which causes sunburn, is ninety percent absorbed by the atmosphere. But ultraviolet A easily penetrates the atmosphere and glass. By and large, if the issue of finding a "tan in slippers" is so important for you, you can get it on an open balcony or on the roof. Can you tan through glass? It's a matter of time and desire. If ordinary glass does not allow ultraviolet to penetrate, then you can use one that lets it through. Such will be quartz - the most effective conductor for ultraviolet radiation. Use it to glaze the loggia - and you are guaranteed a tan. After all, this is the material used in solarium lamps.

The fact that the transmission capacity of glass is quite low in relation to ultraviolet rays has been heard by many more than once, but people who spend a sufficient amount of time behind the wheel are ready to argue with this statement.

According to many motorists, it has been noted more than once that the skin of the hand that is closer to the glass has a darker shade, which is due precisely to exposure to ultraviolet radiation. So is it possible to tan through the glass of a car? The answer to this question can be given by understanding some of the nuances.

To give an unambiguous answer to the question of whether it is possible to tan through a window glass, it is necessary, first of all, to understand the mechanism of tanning and the types of ultraviolet radiation. Sunburn should be understood as the response of the skin, which is formed in response to the negative influence of sunlight belonging to the ultraviolet spectrum.

The skin of each person is filled with melanin, which, under conditions of prolonged exposure to the scorching sun, begins to darken, forming the same tan. The protective reaction consists in preventing the unhindered penetration of ultraviolet light into the body and causing irreparable harm.

The sun's rays belonging to the ultraviolet category are represented by:

• Radiation type A, which is distinguished by the highest degree of safety and softness. As a rule, exposure of the skin to this type of radiation is not accompanied by the formation of a protective reaction, so the production of melanin is normal.
• Type B radiation. Radiation of this category differs only in relative safety, because it can have a detrimental effect on living organisms. As a rule, no more than 10% of this radiation reaches the earth's surface, but the rest is retained by the atmosphere.
• Type C radiation, which is considered the most dangerous. According to the statements of leading researchers, in the absence of a deterrent in the form of the atmosphere, under the influence of this ultraviolet radiation, the rapid death of all living organisms on the planet can occur.

So, in contrast to the fact that glass does not transmit ultraviolet light, there are numerous evidences to the contrary, which people share from personal experience. So is it possible to tan through the glass of a window? In fact, the answer to the question will be ambiguous, because both statements are correct.

It's easy enough to explain. The fact is that glass has its own varieties, each of which is differently affected by ultraviolet radiation. So, the throughput of organic glass is quite high, because the passage of the entire spectrum of ultraviolet radiation is ensured. It becomes obvious the answer to the question of whether it is possible to tan through car glass, where everything depends on the characteristics of the glass.

The properties of glass should also be taken into account when determining whether it is possible to sunbathe through glass on a balcony. As evidenced by numerous studies, only radiation belonging to category A passes through window panes.

The fact that through the glass you can sunbathe on the balcony is often told by people who note a slight darkening of the skin. Experts reduce this statement to the category of serious misconceptions and no more.

There is a very simple explanation for this phenomenon: the change in skin tone in this case is provoked by the activation of a small amount of residual melanin in the skin. As a rule, changes in the color of the skin are temporary and the skin condition returns to normal fairly quickly.

Is it possible to tan through the glass of a car?

Many representatives of the category of avid drivers claim that it is possible to tan through the glass of a car, reinforcing the words with personal experience. So, often after a long stay in a car under the scorching sun, a change in skin tone is noted in some areas, namely on the face and hands. This statement is accompanied by constant disputes and discussions.

Experts, on this account, are inclined to the fact that everything depends on the material of the glass and in most cases, car windows transmit only type A radiation. In other words, to get a sufficient tan while driving a car, you need to spend dozens more time. This explains the fact that avid drivers still get a minimum dose of tan while driving. But such a tan does not threaten passengers at all.

So, summing up, it should be noted that you can sunbathe through window glass and car glass only in case of a long stay in such conditions. In this case, changes in skin tone are only short-term.

Tanning video

For many people, the answer to the question of whether it is possible to tan through glass is obvious. Of course, "no", the majority believes, and I must admit, I am very mistaken. No, of course, no one will argue with the fact that drivers and those whose jobs are in close proximity to the window get a tan quite quickly. But the physics of this process is not as simple as it might seem.

The nature of tanning

To answer the question of whether it is possible to tan through ordinary glass on a balcony or in a car, in fact, everyone can do it on their own - you do not need to have a special education for this. The main thing is to first understand how exactly the process of darkening of the skin occurs, and what factors affect it.

Any sunbeam consists of several different types of electromagnetic radiation. Each of them is perceived by the body in its own way: some are regarded as a source of heat, others - exclusively light. Of course, not a single person can yet feel the ultraviolet or touch it with his hands.

There are three main types of UV rays:

1. A-radiation is long-wave. It penetrates the surface of the planet almost completely and affects the body imperceptibly. It is not difficult for A-rays to penetrate into the deep layers of the epidermis. Because of what the latter is aging faster than expected. Radiation destroys collagen and dehydrates skin cells. Under its influence, slight redness may appear. For some people, it develops precisely because of it. But if you contact with long waves in a dosed manner, they will not pose a health hazard.
2. Speaking about whether it is possible to sunbathe through the glass of a window, one must definitely remember B-radiation. It is short-wavelength, but this does not prevent it from reaching the Earth almost completely - even taking into account the fact that waves tend to scatter when they collide with obstacles. B-rays are the source of itself. Under their influence, melanocytes produce melanin much faster. But if you contact them for too long, the skin can burn.
3. The most dangerous is considered to be gamma radiation. Fortunately, most of its rays are delayed on their way to the Earth's surface by the ozone layer. Otherwise, all life on the planet would simply burn out.

From the foregoing, one conclusion can be drawn: in order to tan faster, more evenly and more beautifully, you still need direct contact with UV rays.

So is it possible to tan through the glass of a car or a window?

Glass is a transparent material. It easily transmits light, but at the same time delays ultraviolet rays of beta and gamma type. Even the thickest windows cannot stop alpha radiation. And as you already know, long-wave A-rays have a very slow effect on the epidermis. The maximum effect that can be achieved is a slight reddening of the upper layer of the skin, which will come down in time. With all the desire to achieve a persistent tan, it will not work - the radiation intensity is too low.

It is possible to tan well through a window or car glass only if several conditions are met. First, the sun's rays must act on the epidermis constantly. Secondly, a chocolate shade will appear more likely if the skin already has melanin. Everything is explained simply: over time, the tan is washed off and burns out. But melanocytes during direct contact with the sun produced a large amount of melanin. And now, even under the influence of radiation of low intensity, the skin of the epidermis may begin to darken.