Yang Fan said with a smile: "Knowledge, great wisdom, well said." ”

Peng Hui glanced at Yang Fan with disdain: "Do you know what Gewu Zhizhi is?"

"Mr. Peng is a man of great wisdom and admires him very much. ”

Yang Fan suddenly became modest.

Peng Hui snorted, "Tell me, how is the structure of my Peng Hui invincible artifact?"

Yang Fan said with a smile: "Isn't this just igniting the gunpowder, after the gunpowder burns, it quickly generates a huge air pressure, pushing the projectile in the pipeline to launch along the pipeline." ”

Peng Hui was stunned and wondered, "What is air pressure?"

Others were even more puzzled.

"Actually, this artifact should be modified, and the fire rope must be ignited every time, the firing time is too slow and too cumbersome, if you can use something with a low ignition point, and emit flames through collision to ignite the gunpowder, it will be much more convenient. ”

Yang Fan said with a smile: "Moreover, every time your artifact is fired, you must reload the gunpowder projectile, and the practicality is not as good as that of a bow and crossbow, if it can't be improved, it basically has no meaning." ”

Peng Hui was curious: "Could it be that you have a way?"

Yang Fan shook his head and smiled: "I'm just saying my opinion, this artifact was made by you, how to improve it, of course, you have to come." ”

Jiang Beilai listened to what Yang Fan said, and his heart sank, although this artifact is powerful, but the shortcomings are also obvious, could it be that he thinks too simply?

Peng Hui was puzzled: "Since you said that this artifact is not very useful, why do you have to pay a high price to buy it?"

"What I fancy is your gunpowder formula, you think, just light the gunpowder like this, you can push the projectile to launch, the destructive power is very amazing, if I magnify your artifact hundreds of times, or even thousands of times, and the projectile pushed out becomes an iron ball, do you think you can conquer the city?"

Peng Hui looked at Yang Fan in surprise and muttered, "Hundreds of times, thousands of times? In that case, I am afraid that the city gate will also be able to break through." ”

Jiang Beilai looked excited, it turned out that this gunpowder formula was the most useful.

He Xiaoling, Chu Yanran and others behind Yang Fan were also surprised, this thing can really conquer the city?

Only Yang Fan was still indifferent.

"In addition, it can also play an important role in opening mountains and building roads, you think, the kind of cliff full of stones, want to use a hammer to break a little bit, it is simply time-consuming and laborious, if I use a chisel to cut a hole in the stone wall, stuff gunpowder in it, and then seal the hole, and then detonate it with a fire rope, do you think this power can blow the stone wall open?"

Peng Hui was already excited: "Yes, yes, why didn't I think of it before, hahaha, I really didn't expect it, this gunpowder still has such an effect, Yang Gongzi, no, Mr. Yang, is there any other use for this gunpowder?"

Jiang Beilai looked at Yang Fan in shock, this guy should also be the first time to see this so-called artifact, why can he think of so many in an instant, this person is a monster.

Yang Fan shook his head and smiled: "There are many uses, waiting for us to slowly discover, everything in the world, only through continuous experiments and exploration, can we understand the truth, Mr. Peng, you ask yourself that your knowledge and insights in Gewu are quite extraordinary, then let me ask you, why are there days and nights in the world, and the four seasons of spring, summer, autumn and winter?"

Peng Hui was puzzled: "Because the sun rises in the east and sets in the west, there will be day and night, and spring, summer, autumn and winter are also caused by the movement of the stars. ”

Yang Fan didn't answer, and continued to ask: "Why do apples fall down when they are ripe? Why does the water flow down?"

Peng Hui smiled: "If you don't fall down, will it still fall into the sky, it's really strange for you to ask." ”

Yang Fan said with a smile: "Everyone takes it for granted, but ignores the real principle of things, then let me ask you again, a one-pound stone and a ten-pound stone, falling from a height of ten meters at the same time, which one hits the ground first?"

Peng Hui didn't think about it: "Of course it's ten catties." ”

"If you want to learn from things, you must have the spirit of exploration and take everything for granted, so how can you find things? Only through continuous experimentation can we seek the truth." ”

Peng Hui was depressed, he was in his forties, and he was actually educated by a person who looked less than twenty, and he naturally responded in his heart: "Am I wrong?

Yang Fan smiled: "If you don't believe it, you can test it now, it's right or wrong, it's clear at a glance." ”

Jiang Beilai looked at Yang Fan suspiciously: "One heavy and one light, if it falls at the same height, it must be the heavy one that lands first, is there a mistake?"

Others were also suspicious, including He Xiaoling, who was a little uncertain.

Peng Hui: "This experiment is simple, don't look for ten catties and one catty, just find two stones of different sizes and fall from the cliff together, and the result will come out?"

Just do it, Peng Hui led people to the cliff on the side of the road, holding a stone in one hand, and the weight difference was more than ten times.

Yang Fan and the others watched below.

"Put. ”

Two stones fell at the same time, and then there was a bang, and there was only the sound of landing.

Everyone watched in amazement.

Peng Hui looked surprised, and found someone else to put the stones, and then he watched below, and the results of the experiment were still the same, two stones of different sizes almost in no particular order, landing on the ground at the same time.

"This, this, how is it possible, one is so heavy, the other is so light, how can it land at the same time? ”

Peng Hui muttered to himself, looking confused.

Yin Tianen looked at Yang Fan in surprise, this guy is simply a demon, how can he understand everything, his martial arts are superb, his writing is amazing, and even these strange and ancient things are also very good.

After a while, Peng Hui suddenly took Yang Fan's hand and asked eagerly: "Then tell me, why is there day and night, spring, summer, autumn and winter, why does the water flow low?"

Yang Fan shook his head and said: "Even if I say it, you won't believe it, if you doubt it, you should think about it yourself and experiment." ”

Peng Hui seemed to remember something: "And the air pressure you talked about before, what is it?"

Yang Fan said with a smile: "Do you know cupping, that is the use of the principle of air pressure, in the space we are in, there is air everywhere, it is formless and colorless, but it also has weight, just like water, when there is no water in one place, other places will flow through, if it is blocked by other things, it will form a pressure." ”

Everyone was confused, not knowing what Yang Fan was talking about.

Yang Fan coughed embarrassedly: "When you ignite the gunpowder, the gunpowder will release a large amount of gas when it burns, because the space is closed, the air pressure will be very large, and the air pressure pushes the projectile outward, so as to form this terrible destructive force. ”

Peng Hui shook his head.

Jiang Beilai shook his head.

He Xiaoling and the others all looked at Yang Fan like they were looking at monsters, they didn't know what he was talking about, they felt so profound.

Yang Fan smiled bitterly: "What am I telling you to do with this? ”