"Okay, okay~! I won't say it, I won't say it, you two are innocent, it's okay, right? ”

Li Zexuan was too lazy to deal with Yan Shaoning, and said in his heart that this thing is really based on his strength, what can he do?

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

But it was Li Zexuan who looked at the sky and couldn't help but say.

"Uh......"

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

Suddenly, he received another ice cube, Yan Shaoning almost jumped up by the ice, this thing heard Mo Lingwei say that he would not play today, so he hurriedly threw away the two pieces of ice in his hand, and then rubbed his two hands that were about to freeze.

Li Zexuan couldn't help but be curious: "Yesterday's situation~? What situation could you two encounter yesterday~? I'll listen to it, maybe I can still give you some help~! ”

Mo Lingwei glanced at Li Zexuan suspiciously, thought for a while and said: "Mountain Chief, let's say okay first, I invented this thing, you just helped me improve it, and you are not allowed to steal credit from me when the time comes~!" ”

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

"Eh, eh! Don't go yet, mountain chief! I say I say! ”

Mo Lingwei was anxious, and the little girl hurriedly rushed to the front of Li Zexuan to block the way, and then said:

"I... When I showed Xiao Ningzi the ice cube to make fire yesterday, I accidentally found that when the two convex ice cubes are separated by a certain distance, you can see things in the distance through them, just like the clairvoyance in the script, which is very magical~!

It's a pity that Xiao Ningzi accidentally broke the ice cube on the ground at that time, and the result was ...... As a result, we will never be able to recover the magic of the previous phenomenon! We're just doing this experiment~! ”

The more Li Zexuan listened, the more surprised he became, because according to Mo Lingwei, it was very likely that these two people had inadvertently made the telescope! He pinched his chin and thought for a moment:

"Miss Mo, the reason why you can't recover the magical phenomenon you had before is actually because 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 distance as the distance we placed today. ”

Li Zexuan explained with a smile: "Even if your distance today is exactly the same as yesterday, it is impossible to have the artifact phenomenon like yesterday!" In fact, Miss Mo, you have ignored a problem from beginning to end, that is, the ice cube you used today is likely to be different from the ice cube you used yesterday, and its surface bulge is likely to be different! ”

Mo Lingwei nodded, "Well, that's possible, after all, it's the first time I've made this thing myself, how can I make it exactly the same every time?" But even if it's different, what impact does it have~? ”

Li Zexuan smiled slightly, pointed to the ice mirror that was broken into several pieces on the ground, and said, "Of course it has an impact!" Miss Mo, you used this ice cube to make fire yesterday, I don't know if you can understand the principle~? ”

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

Mo Lingwei opened her mouth, a little embarrassed, and said, "This method is what I saw from the handwriting of the Holy Ancestor of the Mo Family, which says that with this convex ice cube, you can turn sunlight into a small dot, and then that dot is very hot and can ignite something." ”

Li Zexuan suddenly knew from Mohuai's mouth that Mozi was very good at geometric optics back then, and he could figure out small hole imaging, compared to convex lens to concentrate light, it seemed pediatric. Shaking his head, Li Zexuan said to Mo Lingwei and Yan Shaoning, who was listening with relish next to him:

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

After that, regardless of whether the two of them agreed or not, Li Zexuan turned around and went downstairs directly.

After Mo Lingwei and Yan Shaoning heard this, they were first stunned, then surprised, the two glanced at each other, and hurriedly followed.

"Hey! Xiao Xuan, you mean we can create clairvoyance? ”

"Huh! Mountain chief, you wait! ”

……………………

After a while, Li Zexuan came to the fourth floor, then walked through the office area of the twin towers in the center of the building, entered the teaching area, and then found a classroom at random, and directly pushed the door in, Mo Lingwei and Yan Shaoning had already followed.

The two of them saw that Li Zexuan seemed to have the intention of lecturing, so they found two seats in the first row and sat down, Mo Lingwei privately glanced at the neat tables and stools in the classroom, the high podium, and the smooth blackboard, she felt very new in her heart.

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

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 outward, let's call this structure a convex lens............"

One classroom, two students, and a lecturer, the first class of Yanhuang Academy quietly unfolded, and no one could have imagined that such an inconspicuous class opened a new chapter in the development of ancient Chinese optics!

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

Li Zexuan never expected that Mo Lingwei was such a person who asked the bottom of the matter, you told him that the convex lens has a converging effect on light, so she asked why you can converge, okay, you draw an optical path diagram to explain to her why the convex lens can converge light, and the refractive index of different media will inevitably be involved in the middle, so she asked what is the refractive index and how are these refractive indices obtained............

So this little physics common sense, as a result, I talked for two quarters of an hour, thanks to the fact that there were many optical components in Li Zexuan's major in his previous life, and his theoretical foundation is quite solid, otherwise, it is really possible to be asked by this little girl!

However, it is gratifying that Mo Lingwei and Yan Shaoning, two "students", are very serious about listening to the class.

"Well, I see~! Chief, tell us about the clairvoyance! ”

Mo Lingwei pursed her chin and smiled at Li Zexuan.

Yan Shaoning also nodded and said, "Well, I also understand, Xiao Xuan, you can continue to speak!" ”

Although Li Zexuan was an otaku in his previous life, it does not mean that his expression skills are poor, on the contrary, in the serious communication with people, his expression skills have always been very good, and his thinking is particularly clear, perhaps it is precisely because of this that Mo Lingwei and Yan Shaoning can quickly follow his train of thought.

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

……………………

First update!

Thank you, _JUN for the reward!

I slept until nine o'clock, and I was going to have lunch and go to bed in the afternoon, but I saw that someone was urging me to change! Well, in this society, you can really do whatever you want if you have money, and you won't sleep in the afternoon!

emmmm..... The chivalrous man has a dream, I hope that one day I can have Li Zexuan's hand speed, write more than 100 chapters a day, and close all of you who urge changes, so that you can chase more every day, and even have time to send book reviews and urge changes!

(End of chapter)