Chapter 1558: Mirage

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Chapter 1558 Mirage

After hearing what his son said, Zhao Zhongyao thought for a while and said,'It should be like this. This is not a mirage, but a real huge wave. '

'Then how did this huge wave come about? ’ Feifei looked at Dad again and asked.

'How it came about, I don't know yet. We'll probably find out soon, though. When Zhao Zhongyao was talking, he saw this huge wave, which seemed to be starting to rush towards them.

Feifei also saw this huge wave coming towards them. So, I looked at my dad with some fear and said, 'Dad, what should we do now! '

Zhao Zhongyao smiled and said, "Haha, we can just wait and see." '

Feifei said worriedly, 'But this huge wave will swallow our spaceship. '

'Don't worry, it doesn't matter if our spaceship is swallowed by a huge wave! Our spaceship will have no problems either. 'Zhao Zhongyao is very confident in his spaceship.

Now this huge wave is getting closer and closer to their spaceship, Zhao Zhongyao and Feifei can clearly see the huge wave in front of them. Feifei became more and more afraid. But seeing his father's confident look, he felt a little relieved.

Just then, an even more miraculous scene happened. On that huge water wall, suddenly there were many tall buildings. The scene surprised Zhao Zhongyao himself. After all, he himself could not imagine how he could see such a wonderful scene at this time.

Not to mention Feifei, he stared in surprise at the tall buildings above this huge wave, thinking in his heart, what is going on here. How could there be such a miracle.

'Dad, what's going on, is this a mirage? ’ Seeing this scene, Feifei thought of things like mirages again.

After hearing Feifei's words, Zhao Zhongyao thought for a while and said, 'Now it seems that this is the only way to explain it. However, how much do you know about mirages? '

After hearing what his father said, Feifei said again, "I only know that a mirage is a miraculous natural phenomenon that can be seen in the sea, and it seems to be related to the weather at that time." '

After hearing Feifei's words, Zhao Zhongyao said again, "Actually, mirages don't always happen at sea. Sometimes you can see mirages in the desert." '

'Oh, really! What the hell was that mirage? ’ Feifei suddenly became curious about this mirage.

'Okay, let me tell you what the mirage is all about! After finishing speaking, Zhao Zhongyao began to talk.

'A mirage, also known as a mirage, is a natural phenomenon formed by the refraction and total reflection of light. It is a virtual image formed by the refraction of light reflected by objects on the earth through the atmosphere. Its essence is an optical phenomenon.

The appearance of mirages is closely related to geographical location, geophysical conditions, and the meteorological characteristics of those places at a specific time. Its characteristic is that the same place appears repeatedly and at the same time.

In places such as calm seas, rivers, lakes, snow fields, deserts or Gobi, occasionally high buildings, towers, city outlines, trees and other mirages may appear in the air or "underground", which are called mirages. This kind of phantom often appears on the sea of ​​Penglai, Shandong, my country. The ancients attributed it to the mirage of the genus of Jiaolong, which exhaled to form the outline of towers, towers and cities, hence the name.

A mirage is an optical phenomenon. Warm air rises from a sandy or stony surface, refracting light and creating a mirage. Mirages occur in desert areas about 6 miles (9.6 kilometers) from the coast, making objects 1 mile (1.6 kilometers) or more away appear to be moving. Makes land navigation very difficult as natural features are obscured in mirage environments.

Mirage can make it difficult for a person to discern distant objects and also blur the outlines of distant vision, making you feel as if you are surrounded by a sheet of water, and the raised areas of that area appear to be in the water "island". Mirage can also make it very difficult for you to identify targets, estimate ranges, spot people, etc.

However, if you go to a higher spot about 10 feet (3 meters) above the desert floor (3 1/3 meters), you can avoid the hot air close to the surface and thus overcome the mirage. In short, as long as the viewing height is slightly adjusted, the mirage phenomenon will disappear, or its appearance and height will change.

Mirages often occur in seas and deserts. Mirages are the result of refraction of light in layers of air with different densities along a straight line. There are many types of mirages: according to the position where it appears relative to the original object, it can be divided into upper mirage, lower mirage and side mirage; according to its symmetrical relationship with the original object, it can be divided into front mirage, side mirage, shun mirage and side mirage. Anti-mirage; According to the color, it can be divided into color mirage and non-color mirage and so on.

Since ancient times, mirages have attracted the attention of the world. In Western mythology, mirages are depicted as the incarnation of the devil, an omen of death and misfortune. In ancient my country, mirages were regarded as fairylands. Emperor Qin Shihuang and Emperor Wu of the Han Dynasty once led people to Penglai to search for fairylands, and sent people to Penglai many times to seek panacea.

Modern science has made correct explanations for most mirages, and believes that mirages are virtual images formed by the refraction of light reflected by objects on the earth through the atmosphere. The so-called mirages are optical illusions. A mirage is an illusion formed by the refraction of distant objects. It is caused by a temperature gradient formed by the sun heating the ground.

Due to the different densities, the light will be refracted at the boundary of the temperature gradient. our big

The brain thinks that light always travels in a straight line, but when the light passes through the cooler, denser atmosphere below, it is refracted downward, so distant objects appear taller to the brain than they really are. Mirages often occur at sea, because the air humidity within a certain range of the sea is relatively high, and the thickness is also relatively large, so that a large area of ​​water vapor forms a huge lens system by accident under the movement.

When the temperature near the surface changes drastically, it will cause a huge difference in the density of the atmosphere, and the distant scenery will experience abnormal refraction and total reflection when the light propagates, resulting in a mirage. In addition, the occurrence of mirage is also related to the refractive index of air layers at different heights, and the water vapor content is an important meteorological element that directly affects the refractive index. At the same time, there is also a certain relationship with the sudden change of temperature and relative humidity.

The air near the sea surface has a higher refractive index due to the lower temperature of the sea water and the humidity of the water vapor, while the air above it has a higher temperature due to the influence of sunlight. The refractive index of the air layer above the sea gradually decreases from bottom to top with height. Due to the discontinuity of changes in meteorological elements, the change of the refractive index of light in the air also shows discontinuity, and the light passes through the air layer with a large refractive index. When it is at the top, it is easy to form total reflection in sunny, windless or light windy weather conditions, resulting in the spectacle of mirage. '

Zhao Zhongyao told Feifei what he knew about the mirage.

After listening to what his father said about the mirage, Feifei has a general understanding of this matter.

But at this moment, Feifei had another question. Because the mirages Zhao Zhongyao said all happened in the air. For example, at the seaside, you can see some high-rise buildings suddenly appear above the sea level. And on the endless desert, sometimes, mirages can also be seen.

But now the mirage they see is not in the air, but on a huge wall of water, which is very strange.

So, Feifei looked at Zhao Zhongyao again and asked, "Dad, but the high-rise buildings we see now do not appear in the air, but on this huge water wall. what's going on. '

Hearing what Feifei said, Zhao Zhongyao really felt a little different. After all, the mirage they see now really doesn't look like some of the mirage phenomena they knew before. Because everything they knew about mirages happened in the air. Whether it is in the sea, in the desert, or on the snow, it all happens in the air.

But the mirage they saw in front of them actually happened on a wall of water, which is very strange. Obviously, this phenomenon is not a pure mirage.

It's just that Zhao Zhongyao thought about it for a while, and he felt that he understood what was going on. At this time, he looked at Feifei and said, 'The phenomenon we are seeing now should be a very special mirage phenomenon. '

After hearing Zhao Zhongyao's words, Feifei asked curiously again, "What we are seeing now is a special kind of mirage, so what are the characteristics?" '

‘It’s a water curtain mirage. Zhao Zhongyao said so.

‘What, a water curtain mirage! ’ After hearing what Dad said, Feifei looked puzzled again.

‘You know the water curtain movie, right? Zhao Zhongyao looked at his son and asked.

After hearing this, Feifei smiled and said, ‘Hehe, I’ve seen this kind of water screen movie, but I just don’t know how the screen works. '

‘Then let me tell you some more about water curtain movies! 'Zhao Zhongyao saw that Feifei didn't know much about water curtain movies, so he wanted to tell his son some more knowledge about it.

'Water curtain film technology is a multimedia technology that irradiates a beam of light on the water surface, showing a strong three-dimensional film effect. Water curtain films were produced in the late 1980s, but in the early days they only appeared in big cities in some countries such as France and Japan.

Due to the unparalleled optical effect of the water curtain film, when the film is played, the color is fresh and vivid, and the subtitles are clear. The water curtain movie uses a high-pressure water pump and a special water curtain generator to spray water from bottom to top at high speed, and forms a fan shape after atomization. A special video tape is projected on the "screen" by a special projector to form a water screen movie.

When the audience is watching the movie, the fan-shaped water curtain is integrated with the natural night sky. When the characters enter and leave the screen, it seems that the characters take off to the sky or fall from the sky, creating a feeling of emptiness and dream, which is fascinating. The water curtain movie projector is composed of mechanical device, control bracket, communication port, software, time signal interface and dmx512 interface.

The engine of the projector is controlled by optical sensing with high precision, and there are three control methods: program control, direct control and utility program control. The water curtain is more than 20 meters high and 30-50 meters wide. Various VCD discs or water curtain special films can be played on the water curtain. The film and television effects are peculiar and novel, and it is an excellent advertising tool. Water curtain movies can be installed on the water surface.

The water curtain is usually more than 20 meters high and 30-60 meters wide. When the water curtain movie is played, the picture has a strong sense of three-dimensionality and space. This kind of ethereal and dreamy feeling, coupled with the laser pattern, makes the scene even more grand and magnificent. Water curtain films are suitable for major festival gatherings, large squares, and theme parks. '

Zhao Zhongyao looked at Feifei again and told some knowledge about water curtain movies. After Feifei listened, he knew what was going on with this water curtain movie.

'Dad, so we are now watching a luxurious water-screen movie performance for free. Feifei looked at Zhao Zhongyao excitedly and said.

'Of course, it's

How about this! It's just that it's not ordinary people who perform for us. It's just nature. Because it is impossible for ordinary people to perform such a spectacular water curtain movie. Zhao Zhongyao said with a smile again.

'Dad, how can the phenomenon we see now be so miraculous! How can the mirage and the water curtain movie be combined. ’ Although Feifei understands the water curtain movie, he still doesn’t quite understand the combination of mirage and water curtain movie.

‘It’s probably because the place itself is very special. In this Bermuda Triangle area, mirages should be often seen. And such huge waves happen from time to time. When the two happen at the same time, we can see such a spectacle. 'Zhao Zhongyao looked at Feifei again and said.

'Oh, so it is! ’ After hearing what Dad said, Feifei understood what was going on.

But when Zhao Zhongyao and Feifei were talking, the huge wave had already arrived in front of them. Those mirages and water curtain movies before also disappeared. They can't see any tall buildings anymore. All they saw was a huge wall of water rushing towards them.

'Dad, what shall we do? ’ When Feifei saw this situation, he became afraid again. After all, he had never seen such a scene before.

‘Don’t worry, we’ll just fly. At this time, Zhao Zhongyao was a little scared, but he was not worried about anything. Big deal, let the spaceship fly, or not. As long as they fly, this wall of water will be useless to them.

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