The crown princess was still visiting, and Zhu Jingjing couldn't help but be surprised and said, "This is really using that river to help with work, how did you do this?" No, no, no, how did this come to mind? ”

Although it is said that since ancient times, there have been waterwheels and the like in China. But that's just how to get the water out of the river to the farmland. Zhang Yifan's use of this is very fresh.

is also the same, Zhu Jingjing exclaimed, the one she saw was fundamentally different from the waterwheel!

As for how to do this, you can see it with your eyes, so she changed the direction of surprise again.

Hearing her exclamation, the crown princess also shifted her attention.

Outside the cement workshop, you can't see the whole picture of this hydraulic facility. But at this time, the crown princess and Zhu Jingjing can see the whole picture.

After the crown princess took a look, she couldn't help but sigh with emotion: "Fantastic, it turns out that it can still be like this!" ”

If you want to talk about workmanship, it's definitely not that hard. It's rare to think that you can do this, and then let the river do the work!

Zhang Yifan heard their emotion, but in fact, he pouted in his heart, he showed you good things, but you couldn't see the mystery at all.

His hydraulic facility, the part exposed outside the river, is actually called a bucket turbine, which was invented by Pelton in the original history until modern times.

The efficiency of this bucket turbine in using water power has reached an astonishing level, and the energy conversion of water has reached as much as 90%. However, there is no technical difficulty, just unexpected. Therefore, this thing can be invented thousands of years in advance, and it can even be said that as long as you can build a waterwheel, you can invent it.

The principle is actually very simple, at the beginning, the water flow hits the wooden board to cause rotation, and then the wooden board is changed to a wooden cup, and then the next is this, which is to let the water flow hit the middle part of the two wooden cups, that is, the part of the energy that can rebound after the impact of the water flow is also used.

Those who don't know this trick use the same waterwheel with the same energy at all.

At this time, Zhang Yifan is only used to replace labor, and when the time is ripe in the future, the same device can be used to generate electricity. In fact, in later generations, hydroelectric power generation was generated by this bucket turbine.

Then, there is also a mechanical energy conversion device, which is actually very rare, that is, the crank connecting rod device.

However, what Zhang Yifan used was just the opposite, the hydraulic impact turbine rotated, and then converted into a piston movement mode to rotate the hammer. If this is reversed, it is the device inside the car and the steam train.

These mysteries were placed in front of the ancients, but no one knew the goods.

At this time, Zhang Yifan did not mean to expose these secrets, but just answered Zhu Jingjing's question lightly: "As long as you use your brain more, you will naturally think of it!" ”

"I couldn't have thought of it!" Zhu Jingjing listened and couldn't help but say with emotion.

When a masked man who was working not far away heard this, he looked up and said, "Because I don't have a brain!" ”

This person, who was a second cow and was strong, was arrested and brought to the cement workshop to do manual work.

As soon as his words came out, he was immediately startled by the cow father next to him, and a slap immediately hit the back of the second cow, and hit him a forward pounce, if it wasn't for the masked towel, it was estimated that he would have to eat a mouthful of cement.

Daddy Niu didn't care about him at all, but hurriedly apologized: "He is talking nonsense, Miss must not take it to heart!" ”

was said to have no brains, of course Zhu Jingjing was unhappy. But seeing this scene, with Zhang Yifan by her side, she couldn't have a seizure, so she could only forget it.

But who knows, Er Niu got up and muttered: "What are you doing beating me, that's what Brother Fan said about me!" I can't even think of it so simple, I just don't have a brain, and he said that he would give me his brains......"

Father Niu didn't expect that he would give birth to such a stupid son, so he was anxious, so he used both hands and feet, added his fists and feet, and beat Er Niu down again.

Zhang Yifan saw it and didn't care.

If Erniu speaks by himself, he has to bear the consequences of speaking. After being taught a lesson by his father, it is estimated that he will have to go through his brain when he speaks in the future. Otherwise, if you don't have a long memory, who knows what will cause trouble.

But Zhu Jingjing couldn't stand it anymore, and hurriedly said: "Don't fight, Brother Fan is right, it must be reasonable!" ”

"......" The crown princess listened to it on the side, and was speechless for a moment.

Well, the female is outgoing, if you really marry this country boy in the future, I'm afraid that I will be sold and help count the money, right?

But fortunately, she has a powerful father!

She was thinking about it, but Zhu Jingjing had already asked Zhang Yifan with a smile: "Why are you so smart?" How? ”

Zhang Yifan didn't dare to tell her a joke about having brains and no brains, but replied to her: "Actually, it's simple, that is, observation, summary and reasoning, this science can be called Gewuxue or logic." ”

There has always been a point of view that in Chinese history, most of them are mind-oriented, that is, philosophical; Science, on the other hand, requires more logic. China lacked this, and it was only in the development of history that science was finally surpassed by the Europeans along the way.

Although Zhu Jingjing understood the name Gewuxue better, Zhang Yifan's last words were logic, and she immediately asked without thinking: "Then what is this logic, can you teach me?" ”

The crown princess on the side was speechless when she heard it, she felt that she seemed to be a little redundant, and she couldn't even insert her words, so she was rushed by Zhu Jingjing to say it.

Oh, by the way, didn't I want to know the cost of cement, why was I led astray by Zhu Jingjing? If you don't speak anymore, what kind of logic are you going to talk about?

Although the crown princess is indeed interested in this logic, she still remembers the matter of cement after all.

Therefore, without waiting for Zhang Yifan to answer, she hurriedly interjected, interrupting Zhu Jingjing's question: "Let's put this logic first, let's verify the cost of cement first!" ”

When Zhu Jingjing heard this, she suddenly came back to her senses, felt her eagerness, and was a little embarrassed, so she didn't object.

After all, this cement matter is an important factor in the sister-in-law's decision to manage her marriage. She also wants to know, what is the cost of such a good cement?

When Zhang Yifan heard this, he pointed to the workshop in front of him and explained to the crown princess: "The cost of cement, the first is the cost of fuel, and the second is the labor cost before and after firing, which accounts for the majority. For current estimates......"