Chapter 2795 I Want This Girl

This is a courtyard with two entrances. On the attic on the second floor in the backyard, the window is open, and a young girl is holding up a telescope to observe the moon. This scene surprised Shen Long, hey, my Qing Dynasty still has astronomy lovers girl?

So he stopped, and sat on the roof not far away to watch silently. He saw that the girl put down the binoculars after observing for a while, and recorded something on the paper. Shen Long was curious for a moment, and couldn't help but disappear. Go over there for a peek.

"Strange, from the telescope, the moon is a complete sphere, so why is there a lunar eclipse?" She thought for a while, went back to the house, and began to take out various tools to demonstrate.

She took the crystal lamp on the table in the room and hung it on the beam as the sun, the small round table was put down under the lamp as the earth, and a mirror in her hand as the moon, while moving and experimenting repeatedly, she kept observing the sun , the position of the moon and the earth and their mutual relationship, when she saw that the mirror was blocked by the small round table and a shadow appeared on it, she suddenly realized it.

"I understand that the moon shines by reflecting the sun's light, and the light travels in a straight line. The sun's light is blocked by the earth and cannot move forward, and it will form a black shadow on its back, across the sky, so shadows appear on the moon. !"

Amazing, although as early as the Han Dynasty, Zhang Heng had already discovered part of the principle of the lunar eclipse. He believed that the earth walked in front of the moon and blocked the sun’s light. It is called darkness, where the stars are faint, and when the moon is in the moon, it is a lunar eclipse."

In the west, when Columbus arrived in the American continent, he also used the principle of lunar eclipse to intimidate the local aborigines, but in the Qing Dynasty, another woman was able to determine the cause of the lunar eclipse through her own research. Rare.

"Since the lunar eclipse is caused by the earth blocking the sunlight, and not by a dog swallowing the moon, then the frequency and time of the lunar eclipse should be calculable, right? But how should we calculate it?" The girl returned to the round table and sat down, holding a She took out a pen and paper and started to calculate. After wasting a few sheets of paper, she sighed again, "Hey, it's a pity that western astronomy books are really hard to find. It would be great if I could find a few books on this subject."

"Lunar eclipse calculations are not only known by Westerners. Liu Hong in the Han Dynasty had a calculation method for lunar eclipse limits in "Qianxiang Calendar", Cao Wei Yangwei's "Jingchu Calendar" had a calculation method for eclipse points, Liu Song He Chengtian " There is a saying in Yuan Jiali that "the eclipse of the new moon is as follows as a composite number...the eclipse of the lunar eclipse". Liu Song Zuchong's "Da Ming Calendar" calculates the solar eclipse and lunar eclipse are very close to reality..." Shen Long couldn't hold back for a while I spoke.

If it was an ordinary girl, she would definitely be startled when she heard someone talking to herself outside the window in the middle of the night, but this one looked excited, "I have read all these books, but the algorithms recorded in the books are too cumbersome , and the loss is crude, is there an easier calculation method?"

"There are simple calculations, but we need to use Westerners' calculations! But it can't be explained clearly in a short while!" Shen Long said while sitting on the roof next to the window of the attic.

"This Taoist priest, please borrow the book and read it, the little girl is very grateful!" The girl walked to the window and said to Shen Longfu, her eyes were full of desire for knowledge, but not much fear.

"There was an astronomer named Kepler in Taixi. He observed the sky more than a hundred years ago and summed up the three laws of planetary motion. One of them is the law of ellipse: the orbits of all planets around the sun are elliptical, and the sun moves in an ellipse. On a focal point; its second area law, the line connecting the planet and the sun sweeps equal areas in equal time intervals; its Mitsukoshi harmonic law: the square of the sidereal time for all planets to circle the sun and their orbital semi-major axis is proportional to the cube of .

"

"And author of "Mysteries of the Universe", "Optical Requirements for Astronomy", "Nova at the Foot of Ophiuchus", "New Astronomy", "Refractive Optics", "Harmony of the World", "Synopsis of Copernican Astronomy" ", "Rudolph's Tables" and other books, if you are interested, I can send them to you tomorrow!" Shen Long said, he has a lot of astronomical materials, but those of later generations are too deep for this girl. Well, it's just appropriate to bring Kepler's works over.

"Thanks to the Taoist priest. The little girl has nothing else. I ask the Taoist priest to accept these. It will be my borrowing fee. The little girl will definitely keep these books and dare not damage them in the slightest." He quickly took out his jewelry box and handed it to Shen Long with both hands.

"But it's not necessary. It's rare to meet such a studious person. What's the point of borrowing a few books? At this time tomorrow, you just wait here." After speaking, Shen Long disappeared into the darkness after a few jumps.

The woman silently looked at the direction where he disappeared, and muttered after a long time, "Isn't this the swordsman-like stranger in "Legend of Tang Dynasty"? Why does he know so much about astronomy?"

Shen Long originally continued to go north the next day, but he met such an interesting girl, so he stopped in Jiangning. After waking up in the morning, he went to the neighborhood to find out the identity of the girl.

It turned out that this girl was called Wang Zhenyi, and she was the daughter of scholar Wang Xichen, the granddaughter of Xuanhua prefect Wang Fu, who used to be an official in Chu and Guangdong with her father, traveled to the provinces and provinces, learned riding and archery from the Mongols, learned astrology, accurate calendar calculation, poetry and prose, and medical science. , and more literary talent.

If such a girl is placed in later generations, even in the Tang and Song Dynasties, she must be the object of pursuit, but at this time, people regard her as a different kind. The daughters of dignified officials and eunuchs are all eighteen or nineteen years old. There is no one who proposes.

But people don't care about it, either reading books in grandfather's study all day, or observing the starry sky in the yard, practicing counting, and enjoying themselves.

Hey, this one is very famous in later generations. On February 8, 2000, the Beijing Observatory discovered an asteroid. The International Astronomical Union named it after an ancient Chinese—Wang zhenyi, She was once selected into the most authoritative scientific academic journal "Nature", and was included in the story of "50 Outstanding Female Scientists Who Changed the World". There is also a crater on Venus named after her.

It's just that this one should be born ten years later, why earlier? Probably because this world is not rigorous enough? This is good, I thought that all the girls in the world of "My Fair Princess" are crazy, and they don't want to provoke any of them, but I didn't expect to meet such a strange woman.

Well, I want this girl, she is much better than Ziwei, Qinger, Xiangxiang!

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