Many of us have experienced the mirage effect, for this it is enough to remember how the road in the distance becomes a wave on a hot day. But really big mirages can only be seen in the desert. In general, a mirage is just optical phenomenon, which creates the effect of visibility of certain objects.
There are three classes of mirages. The first class is inferior mirages. With this kind of mirage, the lower part of the desert, i.e. a small strip of sand optically turns into a kind of reservoir. This can be seen if it is one level above this band. Such mirages are the most common. The second type of mirage is the superior mirage. This is a rarer occurrence, and also less picturesque. Superior mirages appear at great distances and at high altitudes above the horizon. The third class of mirages defies any explanation, and for many years scientists have been puzzling over the solution to this mystery. The most beautiful and fantastic of the mirages is the veil - morgana. As if by magic, the most beautiful castles can appear, which are constantly moving. Another mysterious phenomenon is chrono-mirages, which display events occurring at great distances and in a different time. Such a miracle has been repeatedly observed in many parts of the world, but as a rule, before morning.
What is the reason for the appearance of such amazing phenomena? This is due to the amazing play of light and air. Here's how to understand it. When the air temperature is quite high, and it is higher at the surface of the earth than in higher layers, favorable conditions are created for the occurrence of mirages. The density of air decreases as its temperature rises, and vice versa. And, as you know, the denser the air, the better it refracts light. The rays falling from the sky have a blue spectrum, and some of them are refracted, while the other reaches the human eye and forms an overall picture of the visible sky. That part of the rays that is refracted reaches the ground in front of the person, and, refracting on its surface, also fall into the field of view of the person. We see these rays in the blue spectrum, which is why it seems that there is a blue reservoir ahead of us. This impression is reinforced by the heated air oscillating ahead of us.
If a mirage occurs above the surface of the sea, then everything happens exactly the opposite. Below, above the surface of the water, the air temperature is lower, and with height - higher. With such a combination of circumstances, superior mirages arise, in which we observe the image of an object in the sky.
The most famous mirage is an oasis in the middle of a hot desert, which is seen by tired travelers. No, this is not a dream, this is a real oasis, only it is located many kilometers from this point, and its image is just a projection of an image that is transferred here by repeated refraction of light rays, under ideally created conditions for this.
Do not naively imagine that a mirage is a game of a sick imagination. Their appearance is confirmed by many photographs.
The ancient Egyptians believed that a mirage is the ghost of a country that no longer exists. The legend says that every place on Earth has its own soul. Mirages observed in deserts are explained by the fact that hot air acts like a mirror. This phenomenon is quite frequent - for example, about 160 thousand mirages are observed annually in the Sahara: they are stable and wandering, vertical and horizontal.
On May 8, 2006, thousands of tourists and locals observed a mirage that lasted for four hours at Penglai off China's east coast on Sunday. The mists created an image of the city, with modern high-rise buildings, wide city streets and noisy cars.
It rained for two days in Penglai City before this rare weather event occurred.
It is almost impossible to study mirages, since they do not appear by order and are always original and unpredictable. According to scientists, the atmosphere is, as it were, a layered, airy cake, which consists of layers with different temperatures. And the greater the temperature difference, the more the course of the light beam is bent. In this case, as if, a giant, airy lens is formed, which is constantly moving. In addition, the observed object and the person himself are inside this air lens. Therefore, the observer sees the image distorted. The more complex the shape of atmospheric lenses, the more bizarre the mirage.
atmospheric mirages divided into three classes: lower or lake; upper(they appear right in the sky) or distant vision mirages; lateral mirages.
A more complex kind of mirage is called " Fata Morgana". No explanation has yet been found for him. It is customary to refer to the variety of mirages of the aurora, mirages-werewolves, "Flying Dutchmen".
Inferior (lake) mirage
Inferior mirages are quite common. For example, water seen on desert sand or hot asphalt is a mirage of the sky over hot sand or asphalt. Airplane landings in movies or car races on television are often filmed very close to the surface of hot asphalt. Then below the car or plane you can see their mirror image (inferior mirage), as well as a mirage of the sky. By the same principle, if you look at an object, for example, along a wall heated by the sun, then you can almost always see a mirage of the object next to the wall.
If on a hot summer day you stand on a railway track or a hillock above it, when the sun is a little to the side or to the side and slightly ahead of the railway track, you can see how the rails, two or three kilometers away from us, seem to be plunging into a sparkling lake, as if the tracks were flooded flood. Let's try to get closer to the "lake" - it will move away, and no matter how much we walk towards it, it will invariably be 2-3 kilometers away from us.
Such "lake" mirages drove the travelers of the desert to despair, languishing from the heat and thirst. They also saw the coveted water 2-3 kilometers away, wandered to it from last strength, but the water receded, and then just dissolved in the air.
In the photo, the sailboat almost disappears in an inferior mirage. Only the sail is visible.
Isokari Lighthouse
Inferior mirage and ship mirage.
Superior mirages (distant mirages)
This type of mirage in its origin is not more complicated than "lake", but more diverse. They are usually called "mirages of distant vision".
On a clear morning, the inhabitants of the Cote d'Azur of France have seen more than once how, on the horizon of the Mediterranean Sea, where water merges with the sky, a chain of the Corsican Mountains rises from the sea, to which about two hundred kilometers from the Cote d'Azur.
In the same case, if the case takes place in the desert itself, the surface of which and the adjacent layers of air are heated by the sun, the air pressure at the top can be large, the rays will begin to bend in the other direction. And then already curious phenomena will occur with those rays that should have been reflected from the object, immediately buried in the ground. But no, they will turn up and, having passed the perigee somewhere near the very surface, will go into it.
In Aristotle's Meteorology, characteristic example: the inhabitants of Syracuse sometimes saw the coast of continental Italy for several hours, although it was 150 km away. Similar phenomena are also caused by the redistribution of warm and cold layers of air. in the direction of the last segment of the path of the light beam.
Boat in the background with a typical superior mirage
On April 20, 1999, an ordinary freighter was practicing in the waters of the southwestern archipelago of Finland.
The ship took many different forms; sometimes it seemed there were 2 ships, one of which was upside down.
Superior mirage and sailboat.
House in the archipelago with an upper mirage
Side mirages
This type of mirage can occur when layers of air of the same density are located in the atmosphere not horizontally, as usual, but obliquely or even vertically. Such conditions are created in the summer, in the morning shortly after sunrise near the rocky shores of the sea or lake, when the shore is already illuminated by the Sun, and the surface of the water and the air above it are still cold. Lateral mirages have been repeatedly observed on Lake Geneva. They saw a boat that was approaching the shore, and next to it, exactly the same boat was moving away from the shore. A side mirage can appear at the stone wall of a house heated by the Sun, and even to the side of a heated stove.
Fata Morgana
Fata Morgana is a complex optical phenomenon in the atmosphere, consisting of several forms of mirages, in which distant objects are seen repeatedly and with various distortions. Fata Morgana occurs when several alternating layers of air of different densities form in the lower atmosphere, capable of producing mirror reflections. As a result of reflection, as well as refraction of rays, real-life objects give several distorted images on the horizon or above it, partially overlapping each other and rapidly changing in time, which creates a bizarre picture of Fata Morgana.
The mirage got its name in honor of the fairy-tale heroine Fata Morgana or, translated from Italian, Fairy Morgana. They say that she is the half-sister of King Arthur, the rejected beloved of Lancelot, settled out of chagrin at the bottom of the sea, in the crystal palace, and since then she has been deceiving sailors with ghostly visions.
On April 3, 1900, the defenders of the fortress of Bloemfontein, in England, saw the battle formations of the British army in the sky, moreover, so clearly that one could distinguish the buttons on the red uniforms of the officers. This was taken as a bad omen. The fort surrendered two days later.
In 1902, Robert Wood, an American scientist who not without reason deserved the nickname "the magician of the physical laboratory," photographed two boys peacefully wandering through the waters of the Chesapeake Bay between yachts. Moreover, the height of the boys in the photograph exceeded 3 meters.
One person in 1852 from a distance of 4 km saw the Strasbourg bell tower at a distance, as it seemed to him, of two kilometers. The image was gigantic, as if the bell tower appeared before him increased 20 times.
TO fata morganam can be attributed to numerous flying dutchmen which sailors still see.
At 11 am on December 10, 1941, the team of the British transport "Vendor", located in the Maldives, noticed a burning ship on the horizon. "Vendor" went to the rescue of those in distress, but an hour later the burning ship fell on its side and sank. The "Vendor" approached the alleged place of the ship's death, but, despite a thorough search, not only did not find any wreckage, but even oil stains. At the port of destination, in India, the commander of the "Vendor" learned that at the very moment when his team was watching the tragedy, a cruiser was sinking, attacked by Japanese torpedo bombers near Ceylon. The distance between the ships at that time was 900 km.
Ghost Mirages
The French colonial detachment crossed the Algerian desert. Ahead, about six kilometers from him, a flock of flamingos walked in single file. But when the birds crossed the border of the mirage, their legs stretched out and flaked, instead of two, each had four. Give or take - an Arab rider in a white robe.
The commander of the detachment, alarmed, sent a scout to check what kind of people were in the desert. When the soldier himself penetrated into the zone of distortion of the sun's rays, he, of course, figured out who he was dealing with. But he also caught fear in his comrades - the legs of his horse became so long that it seemed that he was sitting on a fantastic monster.
Other visions baffle us even today. The Swedish polar explorer Nordenskiöld has repeatedly observed in the Arctic mirages werewolves:
"One day, a bear, whose approach was expected and which everyone saw well, instead of approaching with its usual soft gait, zigzags and sniffing the air, wondering if foreigners were good for him to eat, just at the moment of the sniper's sight ... spread out gigantic wings and flew away in the form of a small green seagull. Another time, during the same sleigh trip, the hunters, being in a tent spread out for rest, heard the cry of a cook fussing around her: "Bear, big bear! No - a deer, a very small deer." , and the killed "bear-deer" turned out to be a small arctic fox, who paid with his life for the honor of portraying a large beast for several moments".
It is well known about ghost mirages. Here is how the British meteorologist Caroline Botley describes this effect.
Mirages lead to victims, however, the physical explanation of the phenomenon of mirages does not at all alleviate the fate of travelers, misled by an ephemeral oasis. In order to protect people brought into the desert from the risk of getting lost and dying of thirst, special maps are compiled with a mark on the places where mirages are usually observed. These guides indicate where wells can be seen, and where palm groves and even mountain ranges.
The victims of mirages are especially often caravans in the Erg er-Ravi desert in North Africa. Before people "with their own eyes" at a distance of 2-3 kilometers appear oases, to which in reality at least 700 kilometers.
People have seen mirages since ancient times, about which many legends have been preserved.
On the one hand, it is difficult to find a person who at least once in his life would not see the simplest mirage - a blue lake on a hot highway. On the other hand, thousands of people observed literally hanging cities, quaint castles and even entire armies in the sky, but here experts have no explanation for this natural phenomenon. 
1. Mirages are of several types: lake, or lower; upper (they appear right in the sky) or distant vision mirages; side mirages. A more complex type of mirage is called "Fata Morgana" 
2.Inferior (lake) mirage. Inferior mirages occur mainly in those cases when the layers of air near the surface of the Earth (for example, in the desert) are heated so much that the rays of light coming from objects are strongly bent. 
3.The victims of mirages are especially often caravans in the Erg er-Ravi desert, that in North Africa. Before people "with their own eyes" at a distance of 2-3 kilometers, oases appear, to which in reality at least 700 kilometers 
4. Superior mirage (distant mirage). The air is heated by the Earth's surface, and its temperature drops with height. However, if above a layer of cool air there is a warmer (brought, for example, by southerly winds) and highly rarefied air layer, and the transition between them is rather sharp, then the refraction is greatly enhanced. Rays of light coming from objects on Earth describe a kind of arc and return down, sometimes tens, even hundreds of kilometers from their source. Then there is a "raising of the horizon", or an upper mirage. 
5. The inhabitants of the Cote d'Azur of France on a clear morning have seen more than once how on the horizon of the Mediterranean Sea, where the water merges with the sky, the chain of Corsican mountains rises from the sea, to which from the Cote d'Azur about two hundred kilometers. 
6. Fata Morgana is a complex optical phenomenon in the atmosphere, consisting of several forms of mirages, in which distant objects are seen repeatedly and with various distortions. For this, the most mysterious type of mirage, convincing explanations have not yet been found. But, there are many theories. 
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9. In summer, in hot weather, when the sun is shining brightly, puddles can be seen on the highway in the distance, reflecting the sky. In fact, there are no puddles: this is a visual illusion, a mirage!
The water surface of the lake reflects light rays and creates an image of coastal vegetation. A layer of air can also reflect light rays and create an inverted image of a landscape that is very far away. This happens in hot weather: the heated air rises and there it comes into contact with a cold layer of air. The contact surface, like a mirror, reflects the lush vegetation of an oasis in the waterless desert, which is very far away. Similarly, on the highway, the sky is reflected in puddles that are not really there. 
10. Thousands of tourists and locals witnessed a mirage that lasted for four hours in the city of Penglai off the east coast of China. The mists created an image of the city, with modern high-rise buildings, wide city streets and noisy cars. It rained for two days in Penglai City before this rare weather event occurred. 
11.And this mirage appeared off the coast of the Chinese resort island of Hainan.
The mirage is said to have been caused by abnormally high air temperatures on the island, which are usually unusual for this time of year.
In the video below you will see a whole ghost town that appeared for a while on east coast China.
Mirage in French means "visibility" and is an optical phenomenon in the atmosphere that makes visible objects that are actually far from the place of observation, and displays them in a distorted form or creates an imaginary image. This is one of the most interesting and amazing mysteries of nature. Let's find out more about them.
People have seen mirages since ancient times, about which many legends have been preserved. On the one hand, it is difficult to find a person who at least once in his life would not see the simplest mirage - a blue lake on a hot highway. On the other hand, thousands of people observed literally hanging cities, quaint castles and even entire armies in the sky, but here experts have no explanation for this natural phenomenon.
Mirages are of several types: lake, or lower; upper (they appear right in the sky) or distant vision mirages; side mirages. A more complex type of mirage is called "Fata Morgana"
Inferior (lake) mirage. Inferior mirages occur mainly in those cases when the layers of air near the surface of the Earth (for example, in the desert) are heated so much that the rays of light coming from objects are strongly bent.
The victims of mirages are especially often caravans in the Erg-er-Ravi desert in North Africa. Before people "with their own eyes" at a distance of 2-3 kilometers, oases appear, which in reality are at least 700 kilometers
Superior mirage (distant mirage) The air is heated by the surface of the Earth, and its temperature drops with height. However, if above a layer of cool air there is a warmer (brought, for example, by southerly winds) and highly rarefied air layer, and the transition between them is rather sharp, then the refraction is greatly enhanced. Rays of light coming from objects on Earth describe a kind of arc and return down, sometimes tens, even hundreds of kilometers from their source. Then there is a "raising of the horizon", or an upper mirage.
On a clear morning, the inhabitants of the Cote d'Azur of France have seen more than once how, on the horizon of the Mediterranean Sea, where water merges with the sky, a chain of the Corsican Mountains rises from the sea, to which about two hundred kilometers from the Cote d'Azur.
Fata Morgana is a complex optical phenomenon in the atmosphere, consisting of several forms of mirages, in which distant objects are seen repeatedly and with various distortions. For this, the most mysterious type of mirage, convincing explanations have not yet been found. But, there are many theories.
If you have ever walked through the endless desert or hot asphalt on a hot summer day, then you probably noticed something like a puddle on the horizon. This phenomenon is called a mirage. It confuses entire caravans, gives empty hopes to wanderers and interferes with rescue operations. Today we will tell you why this natural illusion is formed.
People have met mirages in the distant past. The literature describes in sufficient detail the fact of the meeting of the soldiers of the crusaders with such an amazing phenomenon in the Palestinian desert. IN Ancient Egypt, for example, mirages were perceived as a kind of image of the past - something that existed many years ago.
What is a mirage?
Mirage is an optical phenomenon, which makes it unique and unpredictable. It is simple and complex. Simple mirages will be, for example, images of a water surface on a road or in fields, deserts, and complex ones will be a vision of fabulous structures frozen in the sky.
The researchers found that a mirage is an optical natural illusion that occurs due to the refraction of light rays between layers of air of different density and temperature. Objects that appear on the horizon do exist, but at a great distance from the point at which we see them. This is a kind of projection of the image, which occurs away from the original depicted object.
Mirage is often referred to as an "atmospheric mirror". In the mountains, for example, a person can meet his reflection. This phenomenon is formed due to the presence of stagnant water vapor in the atmosphere. Most often, a mirage is not found in deserts, as many believe, but on the contrary - in a cold climate.
There are many types of mirages:
- In the case of a "side" mirage, the air layers are shifted from a horizontal position to an "at an angle" position. Such a phenomenon can be seen at dawn, near the sea or other body of water. If we notice a real ship approaching the shore, a copy of it will appear next to it, moving in the opposite direction at the same speed.
- "Distant Mirage" - the famous ghost ship "Flying Dutchman". All sailors are afraid of this vision, as they consider it a bad sign. Such a mirage appears when the air is excessively heated from the ground, and then it rises and gradually cools. If during the ascent this layer meets with warmer layers, a phantom will appear.
- Fata Morgana is the most amazing and mystical kind of mirage. This is not just a projection of an object, but also its “copy”. As the distance changes, objects also become too distorted and take on a monstrous fantastic look. One day, French soldiers were moving through the desert. In the distance, they noticed a flock of flamingos, which followed one after another. At a time when the soldiers began to come closer, the birds turned into riders in white robes.
Where are mirages most common?
Scientists believe that a mirage can be found anywhere on our planet and even in the stratosphere. Cosmonaut Georgy Mikhailovich Grechko, while in space, took a photograph of an ice floe hovering in the air above the clouds.
But there are places where mirages occur more often than usual and for this you do not need to fly into space.
For example - Alaska is considered the most popular place for observing mirages. The explanation is very simple - the climate. The colder the air, the clearer and clearer it looks a natural phenomenon. In 1889, in the southeastern part of Alaska, one of the locals, walking near Mount Fairweather, saw the image of a huge city with skyscrapers, towers and temples. Although the source of the mirage was hundreds of kilometers from the peninsula.
A thousand tourists contemplated something similar in the city of Penglai, on the east coast of China. Due to heavy rains that lasted for several days, a very dense fog formed and subsequently formed a mirage with very high clarity. For four hours, the inhabitants of this city watched the illusory buildings, wide avenues filled with people and cars.
The inhabitants of France have repeatedly observed how on the horizon of the Mediterranean Sea, where it is no longer possible to distinguish water from the sky, the ridge of the Corsican Mountains rises from the sea surface, although the distance to the mainland is about two hundred kilometers.
Despite quite logical explanations from the point of view of physics, mirages remain something mystical and mysterious for us. And how much more nature is fraught with phenomena, the origin of which will remain a mystery to us.
