What is the principle of a mirage?

"Mirage" is an idiom used to describe illusory things. In fact, a mirage is a strange and beautiful weather phenomenon. In the desert or over the vast land and water, sometimes you can see the reflection or positive shadow of distant scenery, which expands or shrinks vertically, which is called a mirage. In the morning, it is called a mirage to see the distant scene image standing upright in the sky. At noon or afternoon, seeing the reflection of distant scenery is called a mirage.

The cause of mirage is simply the refraction and reflection of light in the atmosphere with great density difference. Among them, the mirage is formed by the low ground temperature and high air density in the near layer, while the high air temperature and low air density in the upper layer. The "Penglai Wonderland" in Kobe myths and legends is actually a mirage that can often be seen by Penglai seaside. The so-called "Haicheng" is the residence of Poseidon; A mirage is a kind of dragon, which can exhale for buildings, so it is called a mirage.

The mirage in the lower floor is completely opposite to the mirage in the upper floor, which is formed when the ground temperature is very high and the air density near the ground is very low, while the air temperature in the upper floor is low and the density is high. Because the atmosphere is very unstable when the mirage appears, it shakes like tidal waves and presents a beautiful reflection of the lake. This phenomenon has deceived many travelers in the desert.