PFC Chapter 230
Chapter 230
The people outside the sky screen had already noticed that the host was sleepy. Seeing that the sky screen had become noticeably dimmer, they were about to pack up and go back into the house.
Another video appeared above.
Although it is a bit dim, it does not affect the viewing experience.
Everyone knows there are many craters on the moon, but did you know that five of them are named after Chinese people?
[I will give you an inventory below. ]
[The first one is Zu Chongzhi from the Northern and Southern Dynasties.]
Is the moon in the sky really so bumpy? It doesn't look like there are any osmanthus trees or jade rabbits on it. But how did people in later generations see the moon so clearly?
Being able to name a crater means that future generations recognize his contribution, so Zu Chongzhi must be very powerful.
During the Northern and Southern Dynasties, some people knew that Zu Chongzhi was planning to visit him, and some even brought their children with them, insisting that Zu Chongzhi accept them as his disciples no matter what.
Zu Chongzhi is probably best known for his contributions to pi. He was the first to calculate pi to seven decimal places.
[It should be noted that even with supercomputers now, pi still hasn't been calculated. Of course, if pi weren't an infinite, non-repeating decimal, the world would have to change.]
In addition to his contributions to pi, Zu Chongzhi also made significant contributions to astronomy, calendar science, and mechanics. He also wrote a book called "The Art of Embroidery."
This book was passed down until the Tang Dynasty, but because it was so profound, it gradually became lost. Now we can only glimpse a few of it in the notes of Tang people.
[To commemorate this great scientist, the International Astronomical Union decided to name a crater on the moon Zu Chongzhi Mountain.]
[my country's Purple Mountain Observatory has also decided to name an asteroid Zuchongzhixing.]
……
The people outside the sky looked up at the stars, and this was considered a name that would be passed down through the ages.
Astronomy? I started studying it myself!
In fact, all the stars visible to the naked eye in the sky are stars.
Zu Chongzhi frowned as he looked at the sky. His own book had been lost because it was too profound. It seemed he would have to write a simpler version. Perhaps what he found simple might be difficult for others.
Tang Dynasty
When Li Shimin heard that this book was lost during the Tang Dynasty, he stood up and said, "No! This cannot be allowed! It can be used in the Song, Yuan, Ming and Qing dynasties, but not in the Tang Dynasty!"
He remembered that the book "Zhuishu" was a textbook in the Tang Dynasty.
"Have Li Chunfeng thoroughly study this book, make some annotations, and then distribute it free of charge to those who are interested," Li Shimin instructed. "Also, find some people with talent for numerology to come to Chang'an."
……
[The person I'm going to talk about next lived much earlier than Zu Chongzhi. He was Shi Shen of the Wei State during the Warring States Period.]
You may not be particularly familiar with him, but he held a very high position in astronomy. He authored the eight-volume "Astronomy," which detailed the positions of 121 stars.
Later generations combined his astronomical works with Gan De's Star Classics, naming them the Ganshi Star Classics. This work continued to circulate during the Tang and Song dynasties, and although only two volumes remain today, it is still highly regarded by modern astronomers and astrologers.
Daqin
Qin Shi Huang muttered to himself, why wasn't it someone from Qin? If it was someone from Qin, he would have immediately publicized it. Unfortunately, the remnants of the six kingdoms were still there.
"Your Majesty, although Shi Shen passed away a long time ago, he must have had disciples who passed down his knowledge. I think it would be better to summon some of them to Xianyang to serve as officials of the Imperial Observatory."
"Just do it."
Tang Dynasty
Li Shimin quickly ordered people to find the books. He decided to copy all the books before the Qin and Han Dynasties, not to mention those books that were lost in the Tang and Song Dynasties.
He really supports these things.
Be it mathematics or astronomy.
Song Dynasty
"Have you heard that our Song Dynasty has talents in this area?" Zhao Kuangyin sighed. After the Five Dynasties and Ten Kingdoms, these talents suffered heavy losses.
"Arrange for someone to copy it by hand. We need to leave something for future generations."
Then he asked to quickly train talents in this area.
[The third person I want to introduce is probably familiar to everyone. He is Zhang Heng, the representative figure of the Hun Tian theory during the Eastern Han Dynasty and the inventor of the seismometer.]
[Of course, Zhang Heng's scientific achievements were not limited to these. He also discovered the causes of solar and lunar eclipses, created a star map that recorded 2500 stars, and invented the water-powered armillary sphere.]
【So he was called the Saint of Science.】
[International astronomers have named a crater on the moon, and a star in the sky is also called Zhang Heng Star.]
big man
Liu Bang slammed the table happily and immediately ordered his men to call all his old brothers over to eat dog meat together to celebrate this event.
This is from the Eastern Han Dynasty, maybe it is the descendant of these old brothers.
Qing Dynasty
Emperor Qianlong asked Heshen if there were any talents in this area in the Qing Dynasty. Heshen had mentioned three people, but none of them had anything to do with the Qing Dynasty.
He has a dull look on his face.
"Your Majesty, these people are from the Qin and Han dynasties. There were no such people from the Tang and Song dynasties," Heshen replied cautiously. "As for astronomy, it is true..."
"The Qing Dynasty...quickly find someone...to send to study with those foreign missionaries."
[The fourth person I want to talk about is Guo Shoujing from the Yuan Dynasty, who was a calendarist, mathematician, and hydraulic engineer.]
He invented the most advanced calendar of the time and also created many astronomical instruments for observing the stars. He also oversaw the construction of the Tonghui River near the capital.
[He not only named lunar craters and asteroids, but also a major scientific research telescope in my country is now called the Guo Shoujing Astronomical Telescope.]
Yuan Dynasty
Kublai Khan was filled with surprise. He had originally thought that these honors must have been from the Qin, Han, Tang, and Song dynasties, but he didn't expect that they also existed in the Yuan Dynasty. And he knew this person.
There must be a heavy reward.
My Yuan Dynasty finally left a good reputation.
"Arrange for a few Mongolian students to study with Guo Shoujing and tell them to study hard! I'll check in a few months. If they don't make any progress, they'll go back to the grasslands."
Ming Dynasty
Zhu Yuanzhang was anxious. This was about to be the last one. He didn't know if he could count up to the Ming Dynasty. If it was only before the Tang and Song Dynasties, it would be fine.
But the Yuan Dynasty already had them, so the Ming Dynasty couldn’t be without them.
Looking at the well-read scholars below, he felt that it definitely would not be among these people, as they did not have such smart brains.
[The last one is actually a bit special. He lived in the early Ming Dynasty...]
At this moment, the sky suddenly darkened completely, which meant that the host had fallen asleep completely.
Zhu Yuanzhang was extremely anxious. Who was it? Did he recognize him? "Host, please don't sleep. Let the video finish quickly, or I won't be able to sleep."