"Lunge and punch, throat-piercing kick, horse stance and horizontal strike."
Lishui County, in Su Jing's courtyard.
Zhu Biao was doing his first set of military boxing seriously, meticulously and seriously.
Of course, Su Jing is also fighting.
After hitting it three times, I stopped.
"Huh~"
Su Jing let out a breath, then turned to Zhu Biao and said: "Niu Yi, you go to the street to buy breakfast, just like the third child. I will prepare the tools and teach you how to make a telescope after dinner."
"Yes, Master Su!"
Zhu Biao simply arranged his clothes and then trotted out the door.
In just a short while, I bought breakfast.
Fried buns, soy milk and fried dough sticks.
Because Su Jing's courtyard faces the street and Zhu Biao is jogging again, the breakfast is still steaming.
Su Jing washed her hands and started eating directly.
The piping hot pan-fried buns are paired with pure freshly squeezed soy milk and a fried dough stick, which is so delicious.
Food without technology or cruelty also has its own unique natural flavor.
After breakfast, Su Jing's teaching officially began.
"Niu Yi, if you want to learn how to make your own telescope, you must first understand what the principle of a telescope is and why it can see far away."
Su Jing looked at Zhu Biao and said slowly.
Zhu Biao nodded and said: "Students understand that Master Su has always taught students that when dealing with something, you must not only know what it is, but also know why it is."
The longer he studied with Su Jing, the more sensitive Zhu Biao's thinking became.
In other words, it is the modern way of thinking that is changing Zhu Biao.
"very good."
Su Jing continued: "Niu Yi, please read the Mo Jing."
Zhu Biao nodded and said, "I have read it, Master Su."
Su Jing asked: "When the scene arrives, there is an end at noon, and the scene is long. It is said to be at the end. What is behind it?"
As soon as Su Jing finished speaking, Zhu Biao took over and said: "Scenery. People with light are as warm as shooting. Those who are below are also high; those who are high are also below. The feet cover the light below, so the scenery is above; the head covers the top. Light, so the scenery is below. There are ends in the distance and near, and it is in harmony with the light, so the scenery is in the library."
Su Jing also sighed when she heard that Zhu Biao answered so quickly.
This kid must be really hardworking on weekdays.
In fact, Su Jing had not read "Mo Jing" until yesterday, but in order to teach Zhu Biao, she specially prepared lessons in advance.
But Zhu Biao definitely couldn't prepare in advance, and "Mo Jing" is not a key book that requires special study.
"Now that you know, I won't do any experiments on small hole imaging."
Su Jing said lightly: "Do you know what it means when the core refinement of this paragraph appears?"
Yes, this description in the "Mo Jing" is actually the ancients' specific description of the phenomenon of pinhole imaging.
Su Jing considered conducting a small experiment at first, but since Zhu Biao knew everything, there was no need.
Although Zhu Biao was doubtful that what Su Jing said had nothing to do with the telescope, he still thought about it carefully.
After a moment, he shook his head and said, "Students don't know."
Su Jing was not surprised. Although this aspect was scientific common sense, it was indeed not easy knowledge for Zhu Biao.
"Then let me ask you again, why do you think we can see things? In addition to eyes, what else do we need to see?"
Su Jing asked again.
Zhu Biao answered quickly this time: "Light can only be seen during the day, but not at night."
Su Jing nodded and said: "Very good, you can only see things when there is light. The condition for the formation of this small hole is also light."
"At both ends of the small hole, the object and the image it reflects are in an inverted state. Does this mean that light travels in a straight line?"
While talking, Su Jing drew a sketch directly on the paper.
This was the sketch the teacher made when he was in school.
Straight line propagation of light is inferred from small hole imaging.
It was just like a junior high school physics class, which was barely suitable for Zhu Biao's age.
However, after all, Zhu Biao did not receive nine-year compulsory education, so he still lacked understanding of many things.
Su Jing was also anxious, so she taught her slowly if she didn't understand.
From the linear propagation of light to the impact of different media on light transmission.
Su Jing showed Zhu Biao one after another a series of small experiments such as folding cups and chopsticks, scattering of light, etc.
After spending a whole morning's work, Zhu Biao finally had some understanding of light propagation.
Of course, this means that from Su Jing's understanding, when it comes to optics, Su Jing is just an empty bottle.
After all, Su Jing does not study physics, and her knowledge in this area is at the level of ordinary high school students.
"Master Su, students understand."
Zhu Biao's face showed excitement, which was the joy of gaining new knowledge.
"Niu Yi, isn't it strange? I should be teaching you how to make a telescope, but this morning, I've been focusing on the propagation of light."
Su Jing asked with a smile.
Zhu Biao said seriously: "Students believe that Master Su must have profound meaning. Students only need to learn it seriously."
Although Su Jing often depreciates herself to reduce her unshakable status in Zhu Biao's mind, it seems that the effect is not very good.
Zhu Biao still regarded Su Jing as a god-like existence.
Su Jing was a little helpless, but she couldn't say anything. She could only say: "Eat lunch first, and then continue after lunch."
Because she had to teach in the afternoon, Su Jing did not take Zhu Biao out to eat.
A pot of rice, two home-style stir-fries, and that’s it for lunch.
Su Jing's cooking skills can be taught to the chef of Jinling Hotel, so Zhu Biao naturally enjoyed the meal very happily.
Seeing Zhu Biao eating happily, Su Jing finally found some confidence in her failure in planting.
God has opened a door for me, and it is normal to close a window.
After finishing lunch and eating a little, Su Jing resumed teaching.
Now that we have finished explaining the propagation of light, the next step is to explain concave lenses and convex lenses.
To put it bluntly, it is actually the refraction of light.
But it is quite difficult for Su Jing to explain this clearly to an ancient person.
Fortunately, Su Jing already has a concave lens and a convex lens, so it can be easier with practical teaching.
But it took almost three hours, and the sky was already dark, before Zhu Biao had a more systematic understanding.
"Huh~"
Su Jing took a breath and felt very tired this day.
It was obviously just a self-made teaching on a telescope, but many of the modern physics knowledge involved were completely unknown to Zhu Biao.
Under Su Jing's guidance, Zhu Biao had to get to the bottom of everything, so Su Jing could only dismantle it bit by bit, crush it, and explain it slowly.
This made Su Jing deeply understand how difficult the industrial revolution was.
Su Jing once thought about whether she could change the historical process of the Ming Dynasty and promote the rapid transformation of feudal society.
In this case, perhaps there will be no history of humiliation for the next hundred years.
But now, just teaching Zhu Biao how to make a telescope is already so difficult.
This is based on the premise that Zhu Biao is very smart, only teaches one person, and does not need to consider social resistance.
I can only say that I was still a little too hasty before.
"Okay, let's stop here today and continue tomorrow."
Su Jing looked at the sky and stopped teaching.
"Okay, Master Su."
Zhu Biao was a little unfinished, but he still nodded and said, "Should we still have dinner at home?"
Su Jing shook her head and said, "No, let's go out to eat."
Even though he was just sitting here teaching Zhu Biao, it was actually a huge test for Su Jing.
Coming back from time travel, how can I remember so clearly what I learned in my previous life.
My student Zhu Biao is also a "good student". Being a teacher of such a student is very stressful.
The night sky is bright and full of stars.
The choice to eat out is quite simple, Jinling Hotel.
This is the best-located restaurant in Lishui County, and the box Su Jing is in now is also the best-located box.
Four dishes and one soup are better than lunch, but not too extravagant.
"Master Su, can we see stars because the stars themselves emit light?"
Zhu Biao asked Su Jing.
After learning some knowledge about light propagation, Zhu Biao was still very curious about it.
Su Jing shook her head and said: "Stars don't shine, it's just because the sun shines on the stars, and the light reflected by the stars allows us to see them, and then we observe the stars."
"There is obviously no sun now, so how do the stars reflect the sun's light?"
Zhu Biao asked his doubts again.
Su Jing was a little overwhelmed by Zhu Biao who was so inquisitive, but he still said patiently:
"This involves astronomical knowledge. Once you learn the principles of making a telescope, you can try to make an astronomical telescope."
"When the time comes to carefully observe astronomical phenomena, the changes in the positions of the stars, the moon and the sun, the answers to these questions will be readily apparent."
As a former astronomy enthusiast, this problem is naturally difficult for Su Jing.
However, if Zhu Biao asks a question that he cannot answer, it is better to cultivate him into an astronomy enthusiast first.
As for the mysteries of the vast universe, it would be nice to have another like-minded explorer.
That is to say, Lao Zhu doesn't know what Su Jing is thinking, otherwise he will definitely be furious.
You, Su Jing, are such a future heir to the Ming Empire and want to train him to become an astronomy enthusiast.
This is simply teaching Zhu Biao not to do his job properly!
"I understand, Master Su, I will study it seriously."
Zhu Biao said very seriously.
For Zhu Biao, although the mystery of the universe has great appeal, Ming Dynasty is what he cares most about.
Zhu Yuanzhang asked him to learn how to make telescopes so that the soldiers on the front line could win the war.
Zhu Biao knew these very well, which was the biggest reason why he studied so seriously.
From this point of view, Zhu Biao is still a very pragmatic character.
After dinner, Su Jing did not take Zhu Biao for a walk to eat. Today's weather is no longer suitable for wandering around outside at night.
Back in the other courtyard, Su Jing took out her astronomical telescope. There were many stars today, which was a good opportunity for observation.
Zhu Biao stood silently on the side. Su Jing didn't speak, so he said or did nothing.
"Huh? Why are you standing here all the time?"
Su Jing looked at it for a while and was just about to take a rest when she realized that Zhu Biao was still standing behind her and said with some surprise.
Zhu Biao immediately replied: "Master Su, can students also look at the stars?"
Even though he is a pragmatist, Zhu Biao is still full of curiosity towards the sky.
"What's wrong with this?"
Su Jing stepped aside and handed the astronomical telescope to Zhu Biao.
"Thank you Master Su."
Zhu Biao immediately thanked Su Jing, came to the astronomical telescope, and started operating it carefully.
He had seen the moon last time in Donglu Mountain, and now Zhu Biao was also curious about the appearance of the stars.
Soon he saw stars.
But unlike the moon, the stars can only be seen as a slightly larger bright spot.
Zhu Biao's face showed confusion, why was it different from what he imagined.
He turned in another direction and looked at several other stars. They were all similar.
"Why, it's strange, isn't it? You can't see the details on the surface of the stars like you can when observing the moon."
Su Jing said with a smile.
Zhu Biao nodded and said, "Yes, please ask Master Su to clarify my doubts."
Su Jing said calmly: "The reason is very simple. The moon is close enough to us, but these stars are too far away."
"The astronomical telescope I made does not have enough magnification, so I can see the moon a little bit clearly."
Zhu Biao suddenly realized that he had actually learned some knowledge about magnification in the afternoon, but after all, Zhu Biao had just learned it and did not think about it.
"Thank you Master Su, the student understands."
Zhu Biao nodded and started observing again.
Even though he couldn't see clearly, it was the second time he observed it, and Zhu Biao was still shocked by the sight in his eyes.
The vastness of the universe is truly fascinating.
Su Jing looked at Zhu Biao's expression and became more and more satisfied. Her training plan seemed very possible!
(End of chapter)
