Why is there the illusion of moisture on the road surface?

The illusion of water: The reason for this phenomenon is that the difference in air temperature causes the air to be very small below the density, resulting in total reflection, which makes the light from the sky reflect to the human eye and look like the surface of water.

The illusion of gas: The hot air below rises, causing different refractive indices, and different degrees of refraction occur when distant light comes in, creating the illusion of gas.

There is still a difference between this and a mirage:

1.The mirage scene is real, but the water on the road is non-existent.

2.The image of the mirage is above the real thing, and here, the image is below the real thing.

Know what a mirage is? The road sees the illusion that there seems to be water in front of you and which principle. You've learned about the refraction of light in high school.

Mirage, referred to as mirage. Mirages can be found not only on the sea, in the desert, but also occasionally on asphalt roads. There are many types of mirages, which can be divided into epimirage, inferior mirage and lateral mirage according to the position of its appearance relative to the original object; According to its symmetrical relationship with the original, it can be divided into regular mirage, lateral mirage, paramirage and reverse mirage; According to the color, it can be divided into color mirage and non-color mirage and so on.

Due to the dark color of the pavement and the strong absorption capacity of the scorching sun in summer, the asphalt road will also form a distribution characteristic of cold and dense air in the upper layer and hot and dense air in the lower layer, so it will also form a mirage.

It's the refraction of air! Because of the density of the air, the asphalt road has a strong absorption capacity in the scorching sun in summer due to the dark color of the road surface, and the distribution characteristics of the heat and density of the lower air are small. It is also seen in life above the stove.

It is a total reflection of the air, a mirage.

It has to do with the density of the air and the refraction of light.

It should be that the image is refracted and reflected by countless irregular rays of light in the water vapor, causing the image to be distorted and distorted. If the image is formed, it should be possible to find the real scene. Imagine blowing a big soap bubble, in which you can see images of yourself including many objects around you, the soap bubble floats in the sky, and what you see through the soap bubble can't float in the sky.

The soap bubble is a spherical mirror that reflects the image in the outer area. The upwelling flow of water vapor in the time and space of mirage occasionally forms a certain regular arrangement, and it is possible to project an image to the ground at a certain angle, because mirages only appear occasionally and are hard to find. The mirage depends on a certain angle, and the maintenance time is also very short, and it will disappear long before the wind rises and the sun shines.

In the summer desert when the scorching sun is headed, the sand is scorched, because the specific heat of the sand is small, the temperature rises very quickly, the temperature of the lower air near the sand rises very high, and the temperature of the upper air is still very low, so that the abnormal distribution of air temperature is formed, due to the thermal expansion and contraction, the density of the lower layer of hot air close to the sand is small and the density of the upper layer of cold air is large, so that the refractive index of the air is small in the lower layer and large in the upper layer. When the light reflected by a distant higher object is constantly refracted from the denser air in the upper layer into the sparse air in the lower layer, the angle of incidence gradually increases, and when it increases to an equal to the critical angle, total reflection occurs, at this time, if people look at the reflected light in the opposite direction, they will see the mirage.

A mirage, or mirage for short, is a natural phenomenon formed by the refraction and total reflection of light. Mirages often occur along the coast, but also in deserts. When the temperature near the ground changes drastically, it will cause a large difference in the density of the atmosphere, and the distant scenery will undergo abnormal refraction and total emission when the light propagation, resulting in a mirage.

In Penglai County, Shandong, you can often see the phantom of the Miaodao Islands in the Bohai Sea, known as a mirage.

The principle of mirage generation was already learned in physics when I was in junior high school, and it was caused by the refraction of light. It generally occurs in the desert and at sea.

Mirages appear in the desert or on the surface of the sea. The mirage in the desert is easy to give people the illusion and lose their lives as a result, which is also the reason why the mirage is regarded as the embodiment in Western mythology, but the wonders of the mirage will appear every year on the seaside such as Penglai Xiandao, so the ancient Chinese regarded the mirage as a fairyland, and it is a blessing to see the mirage.

When driving, if it is very hot on the road, you can see half a tire on the steaming air on the road. Mirages, on the other hand, are mostly found in places with a lot of moisture, and the transpiring vapor currents can form a trance mirror. As for the fantasy, I can't find the original scene, and it is related to the trance and drift of the airflow, but I believe that with modern camera technology, Penglai Wonderland will be able to find the original scene sooner or later, but this original scene must be a very distinctive large-scale building plus a building or mountain or street with obvious shapes.

Mirage is a natural phenomenon that we can explain with science, its root cause is an abnormal refraction phenomenon, light propagates in the atmosphere with different vertical densities, and the refraction creates a very peculiar scenery, to put it bluntly, it is an optical illusion, and it is not a mysterious phenomenon.

The view of the mirage, most likely, is not fixed, and may even overlap. That is, it is to project different objects from different places onto the surface of the sea. Therefore, it is more difficult to find a prototype.

At the same time, because of the distance and blurred borders, you can only roughly know what it is, and as for the text and specific details, it is difficult to see clearly. If you want to look closer, you can't see it at all.

Mirage is a typical optical phenomenon, and large mirage sites may be relatively rare, and may be difficult to encounter in a lifetime. But on a hot summer day, when you drive on the highway, you will see patches of water waves in front of the road, and when you drive by, you will find that there is no water at all, which is also a small mirage.

A mirage is a coastal scenery where the water vapor in the sea is reflected by the sun.