Otaku Engineer in Great Tang Dynasty Chapter 694: The first class of Yanhuang Academy! (Thank you Gusheng_JUN…

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

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

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

It was Li Zexuan who looked at the sky and couldn't help saying.

"Uh..."

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

Suddenly received another ice cube. Yan Shaoning almost jumped up because of the ice. Hearing Mo Lingwei said that he would not play today, he quickly threw away the two ice cubes in his hand and rubbed them hard. Hands that are about to freeze.

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, she said: "Shanchang, first say yes, this thing was invented by me, you just help me improve it, then you are not allowed to take credit with me~ !"

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

"Eh eh eh! Don't leave the long mountain! I said I said!"

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

"I... When I showed Xiao Ningzi to make fire with ice cubes yesterday, I stumbled upon that when two convex ice cubes were separated by a certain distance, I could see things in the distance through them. Just follow this novel. The clairvoyance is the same, it is amazing~!

Hate that Xiao Ningzi accidentally broke the ice cube on the ground at that time, 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 binoculars! He squeezed his chin and thought about it:

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

Mo Lingwei retorted: "Impossible! The distance between the two convex ice cubes yesterday is about 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, that is what you used today. The surface of the ice cube is probably different from the ice cube 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? What about?"

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 impact! 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: "I saw this method from the handwriting of the ancestor of the Mo family. It said that using this convex ice cube can turn sunlight into a small Point, and then that little point is very hot and can ignite something."

Li Zexuan suddenly knew from Mo Huai's mouth that Mo Zi was very knowledgeable about geometric optics back then, and he was able to figure out small hole imaging. In contrast, using a convex lens to condense light is a pediatrician. Shaking his head, Li Zexuan said to Mo Lingwei and Yan Shaoning who was listening with gusto:

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

After that, regardless of whether they agree or not, Li Zexuan turned around and went downstairs.

When 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!"

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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, 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 of giving lectures, the two of them found two seats in the first row. Mo Lingwei glanced privately at the neatly arranged tables and stools in the classroom and the tall ones. The podium 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~IndoMTL.com~ Let’s call this structure a convex lens... ………"

A classroom, two students, and a lecturer. The first class of Yanhuang Academy started quietly. However, no one could think of it. Such a humble class opened up ancient Chinese optics. The prelude to development!

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

Li Zexuan never expected that Mo Lingwei was such a questionable person. You told her that the convex lens has a convergent effect on light. She asked why you can converge. Well, you can draw a light path diagram to explain to her. Why the convex lens can condense the light, the middle will inevitably involve the problem of 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 common sense 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 true. May be asked by this little girl!

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

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

Mo Lingwei moaned her 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 the previous life was an otaku, that does not mean that he has poor expressive 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. , So that Mo Lingwei and Yan Shaoning can quickly follow his train of thought.

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

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