The three days that Li Chunfeng mentioned at the beginning passed quickly!
In the past three days, Li Zexuan's theory of the solar system has been spreading rapidly in all directions from Chang'an with the speed of a gust of wind. More and more people know about it. Almost all people in a radius of hundreds of miles now know about the "solar system". What is it, how many planets are there in the solar system, and what is the cause of the Tengu eclipse?" These questions!
This day seems to be the same as usual. The sun still rises from the east in the early morning, emitting a golden light. When the sun rises, the people have already gone to work in the fields. The traders have also entered the city at this time, and the officials They are either in court or on duty in the government office. Everything seems so normal!
"My lord, they say that the dog eating the sun means the world will be in chaos. Is that really true?"
In the Yunshan Courtyard, the Li family, who had long known that the Heavenly Dog Eclipse would occur today, did not go anywhere today. Han Yuxi leaned against Li Zexuan in the backyard and asked softly.
Li Zexuan shook his head and said: "Of course not! Didn't my husband say it before? This dog eclipse is just an astronomical phenomenon caused by the movement of stars. It has nothing to do with whether the world is in chaos or whether the king is in a coma!"
Han Yuxi frowned and said, "But these legends have been around since ancient times, and it's hard for me to turn around in a short time!"
Li Zexuan smiled and was about to speak when Pang Feiji suddenly walked in from outside and said, "Master Hou, it's not good! Daoist Li insisted on going to the atrium of Guanghua Building in the academy and wanted to use an astronomical telescope to observe the eclipse of the Tengu for a while. No one can stop it!"
Before, in fact, Li Zexuan not only introduced the causes of solar eclipses in his "Astronomy Overview" article, but also reminded the people not to stare directly at the sun for a long time when the solar eclipse is coming, otherwise it will be easily stabbed. Eye! Although he has mentioned this, not many people seem to have noticed it, because people are only shocked by his solar system theory. Who cares whether looking at the sun with the naked eye will hurt the eyes?
Besides, no one among the common people would have thought that in just two days, such a unique spectacle as the Tengu Eclipsing the Sun would actually appear in the land of the Tang Dynasty!
However, have the public noticed that Li Zexuan has no control over it, but he can do what he should do, which is to close the atrium of Guanghua Building of Yanhuang Academy and prohibit students and teachers from using astronomical telescopes during the solar eclipse!
He did not expect to ban the students and teachers of the academy, but he did not ban Li Chunfeng, a guy who was obsessed with astronomical research.
Hearing this, he stood up quickly and said, "Is this happening? I'll go take a look!"
After that, he said hello to Han Yuxi and took Pang Feiji out.
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"Daozhang Li, the mountain chief has told you that no one can go in today, and Mo can't open the door for you!"
When Li Zexuan arrived near the atrium on the fourth floor of Guanghua Building, he heard Mo Zhong's helpless voice.
"Commander Mo, please be accommodating. Pindao must use this astronomical telescope today, because Pindao has something very important to do. Pindao is willing to bear all the consequences!"
Li Chunfeng said persistently.
"Ahem! Mo Zhong, go get busy first!"
Seeing this, Li Zexuan coughed lightly, walked out and said.
"Here!"
Seeing that Li Zexuan had come in person, Mo Zhong couldn't help but breathed a sigh of relief, then he clasped his fists in response and slowly retreated!
"Master Hou..."
Seeing Li Zexuan, a hint of embarrassment suddenly appeared on Li Chunfeng's face.
Li Zexuan frowned and asked: "What important thing does Master Li have to use the astronomical telescope today? I have said before that when the Tengu eclipses the sun, it hurts the eyes the most. If Taoist Master uses a telescope to observe the sun, , nine times out of ten, your eyes will be blinded by the sun, why do you insist on doing this?"
Li Chunfeng said seriously: "Master Hou, the sun is bright on weekdays. Whether it is with the naked eye or a telescope, it is impossible to directly observe the sun. We finally encountered a Tengu solar eclipse. At that time, the brightness of the sun should be much weaker. If I don't seize this opportunity to see it with my own eyes, Pindao will really be unwilling to do so! I hope Lord Marquis will make it happen! Pindao will end the observation before the sun appears, so there should be no serious problem. Even if there is an accident, Pindao will not I am willing to shoulder the responsibility and have no regrets!”
Li Zexuan was speechless. He only considered safety issues, but did not consider human nature issues. He did not consider the fatal attraction of astronomical wonders such as solar eclipses to astronomy enthusiasts like Li Chunfeng!
Even in modern times, when a solar eclipse occurs somewhere, astronomy enthusiasts from all over the world will travel thousands of miles to set up professional equipment there in advance and wait to observe the solar eclipse!
However, today's solar eclipse should be a total solar eclipse according to Li Chunfeng's prediction. The sun is 400 times wider than the moon, but also 400 times farther from the earth. Because of symmetry, the Moon's dark shadow, the shadow that falls on the Earth's surface, is just wide enough to cover the entire Sun. The sun's photosphere is completely obscured by the moon, and the originally bright solar disk is obscured by the black shadow of the moon. At this time, a total solar eclipse will occur!
In addition to total solar eclipses, there are also partial solar eclipses, annular solar eclipses, total annular eclipses, etc. However, in comparison, only during a total solar eclipse can we safely look at the sun with the naked eye. During a total eclipse, almost all of the sun's light is blocked, and only the corona is visible, and the corona is only as bright as the full moon, so we can accept the light at this time.
However, the light from a small part of the photosphere is enough to damage our eyes, so it is better to take safety measures during a total solar eclipse.
Thinking of this, Li Zexuan said to Li Chunfeng: "Since Master Li insists on this, I will not persuade you anymore, but I have to use the lens of this telescope to add some color!"
At this point, he ignored Li Chunfeng who was full of joy and confusion, turned to Pang Feiji and said: "Feiji, go help me with the ink, and get a glass of water and a writing brush!"
"Yes! Mr. Hou!"
Pang Feiji took the order and left.
After a while, Pang Feiji brought over all the ink, water, and brush that Li Zexuan asked for. Under the suspicious gazes of the two, Li Zexuan first diluted the ink slightly with water, then dipped the brush into the diluted ink, and then He held the brush and painted on the outer surface of the telescope's eyepiece and objective lens!
"Hey! Lord Marquis! You just don't want me to use this telescope. Why do you want to destroy it with ink? How can you see clearly with this telescope?"
Li Chunfeng was greatly heartbroken and stepped forward to stop him.
Li Zexuan kept moving his hands, smearing and saying: "Who said you can't see clearly after doing it like this? This ink is diluted and will not block too much sunlight. It is suitable for Daoist Li to observe the eclipse of the Tengu. This way Once you do this, you can reduce the damage to your eyes caused by the sun!”
Strictly speaking, when observing the solar eclipse, you need to use professional polarized lenses, similar to sunglasses, to reduce the damage of sunlight to the eyes. However, Li Zexuan could not make such lenses for a while, so he thought of one. A relatively simple method is to use diluted ink to smear the telescope lens. 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 a little relieved after hearing this.
Half a quarter of an hour later, Li Zexuan painted all the two lenses of the telescope with diluted ink and said to Li Chunfeng: "Okay! Now, Daozhang Li can do it himself! But although it is coated with ink, Daozhang Li still needs to Don’t look directly at the sun for a long time!”
"Save it for me! Thank you so much, Lord Marquis!"
Li Chunfeng cupped his hands and thanked him.
Li Zexuan nodded, then turned and left!
After he left, Li Chunfeng immediately brought his eyes to the eyepiece of the telescope and took a rough look. He suddenly felt that the whole world seemed to be smeared with a light layer of ink, and the light was not as dazzling as before, but this lens The clarity of the image does not seem to be affected much!
Based on this, Li Chunfeng couldn't help but feel even more grateful to Li Zexuan!
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Around noon, farmers working in the fields packed up their farm tools and prepared to go home for dinner. Pedestrians and vendors on the street also went home if they should, and went to restaurants if they should go. Everything looked the same as before. , but at this moment, the originally clear and cloudless sky suddenly dimmed. The sun that was still shining brightly a moment ago seemed to be partially blocked by something. As time went by, The areas where the sun was blocked became more and more, and after a while, the sun was completely blocked, and the whole world suddenly became like night!
panic!
Faced with the sudden darkness, the first reaction of the people was panic. After all, it was noon and broad daylight just a moment ago, and now it has become completely dark. Many people have never experienced such a strange thing in their lives. How did it happen? Come, how can you not panic!
People's screams of fear could be heard everywhere inside and outside the city. People outside the house hurriedly wanted to return home, but it was so dark that they couldn't even see their fingers clearly. How could they see clearly? Where's the way home?
"The ghosts are coming! All the evil spirits from hell must have come out!"
"It's not an evil spirit, it's the Tengu eating the sun! The Tengu is going to eat the sun. Everyone, hurry up and take out the gongs. If you don't have a gong, bring out an iron basin. Let's scare the Tengu away together!"
"What Tengu eclipses the sun? This is called a solar eclipse! According to Marquis Yong'an, the moon happens to be blocking the middle of the earth and the sun, so the sky suddenly turns black! There are no Tengu, and there are no evil spirits!"
"Then when will it be bright again?"
"Soon, in less than a quarter of an hour, the sky will return to normal!"
The dark night fell, and people were panicked. However, after experiencing the initial panic, people remembered the hot solar system theory that had been circulated in the past few days. Thinking that even the imperial court recognized the correctness of this theory, the people settled down one after another, although there was still a vague feeling in the streets and alleys. You can hear the sparse sound of gongs and drums, but it is far less noisy than the old days of Tengu, when everyone was beating gongs and drums!
It can be seen that the "Astronomy Overview" published by Li Zexuan in the "Datang Daily" a few days ago still played a certain role!
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Yanhuang Academy, the moment the solar eclipse suddenly came, the students had not finished school yet and were still listening in the classroom. It was getting dark suddenly. The students were a little panicked at first, but with the comfort of the gentlemen of the academy, they quickly calmed down. After landing, many brave students walked outside the classroom to find out. When they saw it, they were immediately amazed by the wonderful scenery in the sky!
"Wow! What a beautiful strip of light! That's the moon, right? The moon seems to be wearing a necklace, it's so beautiful!"
I don't know who screamed in surprise, which immediately caused the students in the classroom to run out of the classroom and look 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 a few degrees, the wind will pick up, and the birds will think the sun has set and prepare to roost.
When a total solar eclipse begins, the light from the sun's photosphere continues to circle along the edge of the moon until it surrounds the moon. At this time, the moon looks like it is wearing a necklace. The bright spots on the edge are called Berry beads, which look very beautiful. !
"Everyone, go into the classroom! The mountain leader said that you cannot look at the sun directly with your eyes for a long time, otherwise it will hurt your eyes! All students, return to the classroom immediately!"
Although the gentlemen of Yanhuang Academy had to sigh at the magnificence of the scenery in the sky, they deeply remembered Li Zexuan's original explanation, so the gentlemen walked out of the classroom one after another and drove the students outside into the classroom!
In the open-air atrium on the fourth floor of Guanghua Building, Li Chunfeng was so mesmerized by what he was looking at in front of the telescope that he completely forgot what Li Zexuan had told him before. At this moment, he wanted to put his eyes on the lens of the telescope, not wanting to miss a single minute. !
"Huh? The light doesn't seem right?"
Suddenly, Li Chunfeng let out a startled sound, and his expression became serious.
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At the same time, hundreds of miles away to the east of Shuofang City, a Turkic cavalry was heading towards Shuofang City.
There are approximately more than 20,000 cavalry in this cavalry. Although the sergeants on the horses do not wear heavy armor like the Xuanjia Army, the momentum exuded by the 20,000 cavalry is not weaker than that of the Xuanjia Army!
This is an elite force, this is the world-famous Turkic Wolf Rider!
"Go faster! We must get to Shuofang City before the Tang army breaks the city!"
The leading Turkic general turned around and shouted loudly.
"yes!"
The cavalry behind him responded loudly, and then the whole team ran towards Shuofang City at a faster speed, kicking up smoke and dust along the way!
However, this menacing leader of the Turkic Wolf Cavalry must not know that someone is waiting for him outside Shuofang City!
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First update!
Two chapters in one!
Thanks to Black Red Plum Fang for the two 10,000 rewards! (March 24)
(End of chapter)
