Otaku Engineer in Great Tang Dynasty

phone-reading

"It's all right~! I won't say, I don't say, you two are innocent, right?"

Li Zexuan didn't bother to take care of Yan Shaoning. He thought that this guy is really single by strength, what can he do?

"But when are you two going to get it? It will be dark in a while!"

But Li Zexuan looked at the sky and couldn't help saying.

"Uh……"

Mo Lingwei looked up, then threw the ice cubes in her hand to Yan Shaoning, and muttered: "No more fun! No more fun! Let's talk about it tomorrow! It's really strange that the situation yesterday cannot be replicated~! "

Suddenly received another ice cube, Yan Shaoning almost jumped up because of the ice. This guy heard Mo Lingwei said that he would not play today, so he quickly threw away the two ice cubes in his hand, and then rubbed the two hardly about to freeze. Hands.

Li Zexuan couldn't help but curiously said: "What happened yesterday~? What happened to you two yesterday~? I can tell you that, maybe I can give you some help~!"

Mo Lingwei glanced at Li Zexuan suspiciously, and after thinking about it, he said, "Zhang Chang, let me say it first. I invented this thing. You just help me improve it. You are not allowed to take credit with me then~!"

Li Zexuan couldn't laugh or cry, "What credit can I take from you~? Hey, if you don't want to say it, then forget it, I just have to go home to rest~!"

"Ehhhhhhh! Shanchang, don't leave! I said I said!"

Mo Lingwei looked anxious, the little girl rushed to Li Zexuan to block her way, and then said:

"I... When I demonstrated ice cubes to make fire to Xiao Ningzi yesterday, I accidentally discovered that when two convex ice cubes are separated by a certain distance, they can see things in the distance through them, just like the clairvoyance in the novel. , It's amazing~!

I hate that Xiao Ningzi accidentally broke the ice cube on the ground, and as a result... As a result, we can no longer recover the magical phenomenon before! We were doing this experiment just now~! "

The more Li Zexuan listened, the more surprised he became, because according to Mo Lingwei's statement, the two of them probably accidentally built out the telescope! He squeezed his chin, thought for a while and said:

"Miss Mo, the reason why you can't recover the previous magical phenomenon is because the distance between the two ice cubes is wrong!"

Mo Lingwei retorted, "Impossible! The distance between the two convex ice cubes yesterday is probably the same as the distance we placed today?"

Li Zexuan explained with a smile: "Even if your distance today is exactly the same as yesterday, then there is no magical phenomenon like yesterday! In fact, Miss Mo, you have overlooked one problem from beginning to end, and that is the ice cube you used today. It’s probably not the same as the ice cubes used yesterday!"

Mo Lingwei nodded, "Well, that's possible. After all, it's the first time I made this thing by myself. How can I do it exactly the same every time? But even if it's different, what's the impact? "

Li Zexuan smiled slightly and pointed to the ice mirror that had fallen into pieces on the ground, and said, "Of course it has an effect! Miss Mo, you used this ice cube to make fire yesterday. I wonder if you understand the principle~?"

"I...I...Of course...I don't understand!"

Mo Lingwei opened her mouth and said with a little embarrassment: "This method is what I saw in the handwriting of the ancestor of the Mo family. It said that using this convex ice cube can turn sunlight into a small dot. That little spot is very hot and can ignite something."

Li Zexuan suddenly knew from Mo Huai that Mo Zi was very knowledgeable about geometric optics back then, and he was able to produce small hole imaging. In contrast, using convex lenses to condense light seems to be a pediatrics. Shaking his head, Li Zexuan said to Mo Lingwei and Yan Shaoning, who was listening with gusto next to him:

"You two come down with me, I will tell you how the legendary clairvoyance was made, and give you a task by the way~!"

After all, Li Zexuan turned around and went downstairs regardless of whether they agreed.

After Mo Lingwei and Yan Shaoning heard these words, they were first taken aback, and then surprised. The two looked at each other and hurriedly followed.

"Hey! Xiaoxuan, you mean we can make clairvoyance?"

"Eh! Shanchang, wait for you!"

……………………

In a few moments, Li Zexuan came to the fourth floor, then walked through the two-tower office area in the center of the building, entered the teaching area, randomly found a classroom, pushed the door directly, and Mo Lingwei and Yan Shaoning had already followed.

Seeing that Li Zexuan seemed to have the intention to give lectures, the two found two seats in the first row. Mo Lingwei glanced privately at the neatly arranged tables and stools and the tall podium in the classroom, and The smooth blackboard felt very novel in her heart.

"Miss Mo, let me first tell you the principle of making fire from ice cubes!"

Li Zexuan first drew a convex lens on the blackboard, then looked at Mo Lingwei, and said: "The shape and structure of this ice cube is convex~www.ltnovel.com~ Let’s call this structure a convex lens... ..."

One classroom, two students, one teacher, the first class of Yanhuang Academy started quietly, but no one would have imagined that such a humble class opened the curtain for the development of ancient Chinese optics. !

"Miss Mo, now you understand the principle of convex lens focusing~?"

Li Zexuan never expected that Mo Lingwei was such a questioning person. You told her that convex lenses have a convergent effect on light. She asked why you can converge. Okay, you can draw a light path diagram to explain to her why convex lenses are. Being able to converge light, it will inevitably involve the refractive index of different media. As a result, she asked what is the refractive index and how these refractive indexes are derived............

So this little piece of common knowledge of physics ended up talking about two quarters of an hour. Thanks to the fact that Li Zexuan’s previous major contained a lot of optical components, and his theoretical foundation is fairly solid, otherwise, it’s really possible to be affected by this. The little girl was upset!

However, it is gratifying that the two "students", Mo Lingwei and Yan Shaoning, are very serious in attending classes.

"Well, I understand~! Shan Chang, you can tell us about the clairvoyance!"

Mo Lingwei twitched his chin and smiled at Li Zexuan.

Yan Shaoning also nodded and said: "Well, I also understand, Xiaoxuan, you can go on!"

Although Li Zexuan in his previous life was an otaku, that doesn’t mean that he has poor expression skills. On the contrary, in serious communication with others, his expressive ability has always been very good and his thinking is particularly clear. Perhaps it is because of this that Mo Lingwei and Yan Shaoning could quickly follow his train of thought.

"Well, good! Now that you understand this, the next step is very simple~!"

……………………

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