Otaku Engineer in Great Tang Dynasty Chapter 1392: The dark night falls, and the wolf ride is raging! (Thanks to the black and red Meifang’s Wan…
The three days that Li Chunfeng said at the beginning soon passed!
In these three days, Li Zexuan’s solar system theory has been spreading rapidly in all directions from Chang'an at a speed like a gust of wind and rain. More and more people know about it. People living in a radius of hundreds of miles, almost all Know the questions of "what is the solar system, how many planets there are in the solar system, and what is the cause of the Tengu Eclipse"!
On this day, it seems to be the same as usual. The sun is still rising from the east in the early morning, giving off a golden light. When the sun rises, the people have already gone to work, and the vendors have already entered at this time. In the city, the officials are either in the upper court or on duty in the government office. Everything seems so normal!
"Msang-gong, they all say that this eclipse of the dog means the world will be chaotic. Is that really the case?"
Yunshan Guest House, the Li family who knew that there would be a Tengu Eating Day today, did not go anywhere today. Han Yuxi nestled on Li Zexuan in the backyard and asked softly.
Li Zexuan shook his head and said: "Of course not! Didn't you say that before? The eclipse of the sky is just an astronomical phenomenon caused by the movement of stars. It has nothing to do with the chaos of the world and the faintness of the county king. No!"
Han Yuxi frowned and said: "But these legends have been around since ancient times, and it is difficult for a concubine to turn around for a while!"
Li Zexuan smiled and was about to speak, when Pang Feiji suddenly walked in from outside and said: "Hou Ye, it's not good! Daochang Li insisted on going to the courtyard of the Guanghua Building of the academy, and wanted to use the astronomical telescope to observe the Tengu for a while. No one can stop the eclipse day!"
Before, Li Zexuan not only introduced the cause of the solar eclipse in the "Overview of Astronomy" article, but also reminded people not to stare directly at the sun for a long time when the eclipse is coming. Easy to stab the eyes! Although he has mentioned this point, not many people seem to have noticed it, because people are only shocked by his solar system theory. Who cares whether seeing the sun with the naked eye hurts the eyes?
Furthermore, no one among the civilians would have thought that after just two days, the land of Datang would really have such a world-famous spectacle as the Tengu Eat Sun!
Although the people have noticed that Li Zexuan can't control it, but he can do what he should do, which is to close the atrium of Guanghua Building in Yanhuang Academy and prohibit students and teachers from using the telescope during the solar eclipse!
He didn't expect to ban the students and teachers of the college, but he did not ban Li Chunfeng, a guy who is obsessed with astronomy research.
Hearing this, he quickly stood up and said: "What happened? I'll go and see!"
After that, he greeted Han Yuxi and took Pang Feiji out.
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"Dao Chang Li, Chief Shan confessed that no one can enter today, and Mo can't open the door for you!"
When Li Zexuan came near the atrium on the fourth floor of Guanghua Building, he heard Mo Zhong's helpless voice.
"Commander Mo, please make it easy. Pang Dao must use this astronomical telescope today, because Pang Dao has very important things, and Pang Dao is willing to bear all the consequences!"
Li Chunfeng said reluctantly.
"Ahem! Mo Zhong, go ahead!"
Seeing this, Li Zexuan gave a light cough, walked out and said.
"Here!"
Mo Zhong saw that Li Zexuan had come in person, he couldn't help but heaved a sigh of relief, then clasped his fists in response, and then slowly stepped back!
"Master Hou..."
Seeing Li Zexuan, Li Chunfeng's face suddenly appeared embarrassed.
Li Zexuan frowned and asked: "What is the important thing about Dao Li, who must use an astronomical telescope today? Benhou has said before that when the Tengu eclipses the sun, it hurts the eyes the most. If Dao Chang uses a telescope If you observe the sun, you will probably be blinded by the sun. Why do you insist on doing this?"
Li Chunfeng said with a serious face: "Master Hou, the sun is bright on weekdays. Whether it is with the naked eye or a telescope, it is impossible to observe the sun directly. It is not easy to encounter a Tengu eclipse day. At that time, the brightness of the sun should be weak. If you don’t seize this opportunity to see with your own eyes, Pang Dao is really unwilling! I hope that Lord Hou will be fulfilled! Pang Dao will end the observation before the sun appears. There should be no major problem, even if there is an accident. Poor Dao is also willing to bear it without any regrets and regrets!"
Li Zexuan was silent. He only considered safety issues, but did not consider human nature issues. He did not consider the astronomical spectacle of solar eclipse that is fatal to astronomers like Li Chunfeng!
Even in modern times, whenever a solar eclipse is encountered anywhere, astronomers from all countries and regions around the world will travel far and wide, and flock to them to set up professional equipment and wait for the observation of the eclipse!
However, today’s solar eclipse, according to Li Chunfeng’s prediction, should be a total solar eclipse. The sun is 400 times wider than the moon, but it is also 400 times away from the earth. Because of symmetry, the moon's shadow, that is, the shadow that falls on the surface of the earth, is just wide enough to cover the entire sun. The sun's photosphere is completely obscured by the moon, and the originally bright sun disk is obscured by the black moon shadow. At this time, a total solar eclipse will occur!
In addition to the total solar eclipse, there are partial solar eclipses, annular solar eclipses, total annular eclipses, etc. However, in comparison, only during a total solar eclipse can we safely see the sun with our naked eyes. During the total eclipse, almost all the sun's light is blocked, only the corona is visible, and the corona's light is only equivalent to the full moon, so we can accept the light at this time.
But the light from the small part of the photosphere is enough to harm our eyes, so it is better to have safety measures during a total solar eclipse.
Thinking of this, Li Zexuan said to Li Chunfeng: "Since Daochang Li insists on doing this, Benhou will not advise you again, but Benhou has to add some color to the lens of the telescope!"
Speaking of this, he disregarded Li Chunfeng, who was full of joy and doubts, turned around and said to Pang Feiji: "Feiji, you can help me with the ink, and get a glass of water and a brush!"
"Yes! Lord Hou!"
Pang Feiji led the way.
After a while, Pang Feiji took all the ink, water, and brush that Li Zexuan wanted. Under the dubious gaze of the two, Li Zexuan first slightly diluted the ink with water, and then dipped the diluted ink with the brush. Then he held the brush and smeared it on the outer surface of the eyepiece and objective lens of the telescope!
"Hey! Lord Hou! You don't want to let Xiang Dao use this telescope. Why do you use ink to destroy it? How can this telescope see clearly?"
Li Chunfeng was heartbroken and stepped forward to stop him.
Li Zexuan kept moving in his hand, smearing, and said: "Who said that you can't see it clearly? This ink is diluted and won't block too much sunlight. It is used for Daochang Li to observe the eclipse of the Tengu Appropriate, in this way, the sun's damage to the eyes can be reduced!"
Strictly speaking, when observing the solar eclipse, you need to use professional polarized lenses, similar to sunglasses, to reduce the sun’s damage to the eyes, but this kind of lens Li Zexuan could not make it for a while, so I thought of a relatively simple method, using diluted ink to paint the lens of the telescope. Although this method is simple, it is indeed effective.
In modern times, many people have used this method. In addition, you can also use exposed film, used floppy disks, protective glasses for welding, blackened glass, etc., to replace those professional Polarized lenses!
Li Chunfeng felt relieved after hearing this.
After a quarter of an hour, after Li Zexuan painted all the two lenses of the telescope with diluted ink, he said to Li Chunfeng: "Okay! Now Li Daochang is free! But even though it was painted with ink, Please don’t look at the sun for a long time!"
"Poverty and save! Thank you Lord Hou!"
Li Chunfeng bowed his hands and thanked him.
Li Zexuan nodded, then turned around and left!
After he left, Li Chunfeng immediately put his eyes in front of the eyepiece of the telescope and glanced roughly. He suddenly felt that the whole world was smeared with a faint layer of ink, and the light was not as dazzling as before. However, the sharpness of the lens image does not seem to be affected much!
Based on this, Li Chunfeng couldn't help being more grateful to Li Zexuan!
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At around noon, the farmers in the field gathered their agricultural tools and prepared to go home for dinner. The pedestrians and vendors on the street should also go home. Those who should go to the restaurant should go to the restaurant. Everything looks the same as before. It’s no different, but at this moment, the sky that was clear and cloudless suddenly dimmed at this moment. The sun that was still shining at the moment before seemed to be partially blocked by something. With the passage of time, the area blocked by the sun came more and more. After a while, the sun was completely blocked, and the whole world suddenly became like night!
Panic!
In the face of this sudden night, the people’s first reaction was panic. After all, it was noon or broad daylight the moment before. Now the sky has become completely dark. Many people have never experienced such strange things in their entire lives. How can you not panic when you encounter it!
The people’s screams of fear can be heard everywhere in and outside the city. People outside the house hurriedly want to go home, but now it’s dark and they can’t even see their fingers. Have to clear the way home?
"The ghost is coming! It must be all the evil spirits of **** coming out!"
"It's not an evil spirit, it's a Tengu eclipse day! Tengu is about to eat the sun, everyone quickly copy the guys, take out the gong, take out an iron basin if there is no gong, let's scare the Tengu away!" /
"What Tengu eclipse day? This is called a solar eclipse! According to Yonganhou, the moon happened to be in between the earth and the sun, so the sky suddenly turned black! There are no tengu, and no evil spirits! "
"When will it be bright then?"
"Soon, in less than a quarter of an hour, the sky will return to normal!"
The dark night fell, and people were panicked, but after experiencing the initial panic, people remembered the hot solar system theory that had been circulating in the past few days, thinking that even the court had recognized the correctness of this theory, and the people settled down. The sparse gongs and drums can still be heard in the streets and alleys, but it is nowhere near the noise of the people beating gongs and drums in the days of Tengu!
It can be seen that the "Overview of Astronomy" published by Li Zexuan in the "Datang Daily" a few days ago still played a certain role!
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Yanhuang Academy, when the solar eclipse suddenly fell, the students were still in the classrooms before school was over. The sky was suddenly dark. The students were a little panic at first, but under the comfort of the gentlemen of the Academy, they were very Quickly settled down, many daring students also walked outside the classroom, wanting to find out, this look was suddenly beautiful by the wonders in the sky!
"Wow! What a beautiful strip of light! Isn't that the moon? The moon seems to be wearing a necklace, it's so pretty!"
I don't know who exclaimed, and suddenly the students in the classroom ran out of the classroom and looked up.
During a total solar eclipse, the sun will be gradually blocked. At this time, the sky will not only darken, but also strange colors will appear. The temperature will drop by a few degrees, there will be wind, and the birds think the sun is down and prepare to roost.
When the total solar eclipse begins, the light from the sun’s photosphere continues to circle the edge of the moon until it encloses the moon. At this time, the moon looks like it is wearing a necklace with a bright spot on the edge called Bailey Bead. Look It's very beautiful!
"All go into the classroom! The head of the mountain said that you cannot look at the sun directly with your eyes for a long time, otherwise you will sting your eyes! All students, return to the classroom immediately!"
Although the gentlemen of Yanhuang Academy had to sigh the magnificence of the scenery in the sky, they still remember Li Zexuan's explanation deeply, so the gentlemen walked out of the classroom and drove the students outside into the classroom. !
In the open-air atrium on the fourth floor of the Guanghua Building, Li Chunfeng was fascinated by what he saw in front of the telescope. He completely forgot what Li Zexuan had told him before. At this moment, he wished to stick his eyeballs on the lens of the telescope for a minute and a second. Don't want to miss it!
"Huh? This light doesn't seem right?"
Suddenly, Li Chunfeng gave a startled suspicion, and his expression became serious.
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At the same time, to the east of Shuofang city hundreds of miles away, a Turkic cavalry is marching towards Shuofang city.
This cavalry has more than 20,000 men. Although the sergeants on horses are not wearing heavy armor like the Xuanjia Army, the momentum emitted by the 20,000 cavalry is no weaker than the Xuanjia Army!
This is an elite team, this is the famous Turkic wolf rider!
"The speed is faster! Be sure to hurry to Shuofang City before the Tang Army breaks the city~IndoMTL.com~!"
A Turkic general headed by him turned back and shouted.
"Yes!"
The cavalry behind him responded loudly, and then, the whole team ran towards Shuofang City at a faster speed, picking up smoke and dust all the way!
It's just that this aggressive leader of the Turkic wolf rider certainly didn't know that someone outside Shuofang was waiting for him!
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First!
Two chapters in one!
Thanks to Black and Red Meifang for the two great rewards! (March 24)
(End of this chapter)