"This ...... What the is this......"

"Gollum!"

Yin Lang swallowed a mouthful of saliva deeply, looked at the monuments that exuded a majestic atmosphere under the morning sun not far from them, and muttered a little foul. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

"Fat ...... Fat man, I want to know too! ”

Next to Yin Lang, Jiang Shishi surprisingly did not make a sound, but looked at the ancient ruins that seemed to suddenly appear under the morning sun with a somewhat stunned expression.

"Ming...... I didn't have it yesterday, how can I ...... How can you ...... today? That's what happened......"

"Could it be a mirage?"

At this moment, Yin Lang opened his mouth to put forward a point of view, but when he saw Jiang Shishi looking over, his expression was still a little ignorant, and he couldn't help frowning, and was about to open his mouth to explain, when he only heard Ji Wuchen's voice slowly coming from behind.

"You kid really write novels?"

"Mirage, from the "Historical Records of Heavenly Officials": "The mirage (mirage) meteorological tower; Hirono is angry. The clouds are like the mountains and rivers where the people gather. ”

"Mirage, also referred to as mirage, is a natural phenomenon formed by the refraction and total reflection of light, and is a virtual image formed by the refraction of light reflected by objects on the earth through the refraction of the atmosphere."

"In places such as calm seas, rivers, lakes, snowfields, deserts, or the Gobi, there are occasionally illusions such as tall buildings, city outlines, and trees in the air or underground, which is called a mirage. This kind of illusion often appears on the sea surface of Nanao Island in Shantou, Guangdong, Huilai, Penglai, Zhejiang, and the mirage of the genus of clams attributed by the ancients, and the exhalation becomes the outline of the towering city, which is named. ”

"Mirages are often produced in the sea and deserts, and mirages are the result of the refraction of light rays in layers of air with different densities in the direction of a straight line. There are many types of mirages: according to the position of its appearance relative to the original object, it can be divided into epimirage, inferior mirage and lateral mirage; 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, non-color mirage, and so on. ”

"So if there is a mirage in the desert, it's not surprising at all. Just ......"

"It's just that the mirage is closely related to the geographical location, the geophysical conditions, and the meteorological characteristics of those places at a given time. The abnormal distribution of air temperature is the meteorological condition for the formation of most mirages. ”

"As far as the formation of the mirage is concerned. 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. ”

"In the desert, the sand and gravel are scorched by the sun during the day, and the temperature near the sand layer rises very quickly. Because the air is not good at heat transfer, the heat exchange between the upper and lower layers of the air is very small when there is no wind, so that the vertical difference of air temperature between the lower layer is very significant, and the air density of the lower layer is smaller than that of the upper layer. In this case, if there is a tree in front of you that grows in a relatively moist area, the light projected downward from the treetop will be refracted because it is from the dense air layer into the less dense air layer. When the refracted light reaches the hot and thin air layer close to the ground, it is fully reflected, and the light is reflected back into the denser air layer above by the air layer with low density near the ground. In this way, through a curved ray of light that recesses downwards and downwards, the image of the tree is transmitted to the human eye, and the reflection of a tree appears. Since the reflection is located underneath the real thing, it is also called a mirage. This reflection can easily give people the illusion of the shadows of trees at the water's edge, thinking that there must be a lake in the distance. Anyone who has ever traveled in the desert has had a similar experience. A photographer who shot the film "Ascending the Peak of Shisha Bangma", while walking on a vast dry grassland, also saw such a mirage, and he ran in the direction of the mirage, trying to draw water to cook. When he ran there to see that there was no water source, he realized that it was a mirage. This is because dry grass, like sand, can be exposed to the scorching sun, causing the air layer to gradually increase in density from the bottom to the top, thus creating a mirage. ”

"And since ancient times, mirages have been the attention of the world. In Western mythology, mirages are depicted as the embodiment of the devil, a bad omen of death and misfortune. In ancient China, the mirage was regarded as a fairyland, Qin Shi Huang and Emperor Wu of the Han Dynasty had led people to Penglai to visit the fairyland, and also sent people to Penglai many times to seek a panacea. Of course, this is all an afterthought, and science has also explained that these are nonsense, the so-called mirage is just a virtual image formed by the refraction of light reflected by objects on the earth by the atmosphere, and the so-called mirage is an optical illusion. ”

"But the most important thing is that any kind of mirage can only occur in weather conditions where there is no wind or very little wind. When the strong wind causes the agitation and mixing of the upper and lower air, the difference in the density of the upper and lower air decreases, and the light is not abnormally refracted and fully reflected, then all the illusions disappear at once. ”

"And we don't fit the mirage here at all, because we've been blowing a strong wind since just now, so it stands to reason that it shouldn't have happened."

Yin Lang crossed his hands on his chest, looked at the monuments in the distance, narrowed his eyes slightly, and said softly.

"Whether it's a mirage or not, let's go and see it!"

Ji Wuchen stood behind the two of them and said in a deep voice, at this time, he had already restrained the excitement, and barely kept his surface calm, and the photo that he was holding in his hand had also been put back by him, I don't know what to think about, he didn't say anything about the photo except for discussing the mirage with the two people next to him, and because he was behind the two, and Jiang Shishi and Yin Lang both only cared about the appearance of the ruins in front of them, where would they take care of Ji Wuchen's abnormality behind.

In fact, no matter what the reason, no matter what the reason, since he appeared, he had to go there, not only because the purpose of his coming here was the place in front of him, but more importantly, he had a hunch that there would be something he was looking for.

"Hmm!"

Yin Lang and Jiang Shishi both nodded solemnly after hearing this, but their expressions and actions were different.

Yin Lang was looking at the ruins while looking down thoughtfully, and even his steps were a little heavy and slow, while Jiang Shishi's face was filled with an unbelievable and unconcealable excitement and eagerness, and his steps were relatively brisk, but even so, no one knew what they thought in their hearts.

The three of them cautiously walked into the ancient ruins, but before they could get completely close, they only saw the ruins slowly disappear in the exclamation of Jiang Shishi's exclamation when the morning sun completely rose into the sky......

Jiang Shichen looked regretful, beating his chest and standing on the side, Ji Wuchen looked at the ruins that were almost dissipating with a gloomy face, and where no one noticed, no one saw Yin Lang's hands clenched into fists tightly, even if the joints were white, he seemed to be unconscious......