This morning, after the o'clock, Yang Cong took Zhang Juzheng and other disciples to the Hardware Academy, because the equipment developed by Wang Xuan had been completed, and the steam engine could finally be mass-produced.

The reason why he brings a few disciples to personally verify every important moment is not that he wants these disciples to learn these techniques, but that he brings these disciples to let them witness the birth of these new technologies or new things.

These new technologies and new things will definitely affect the whole world in the future, and his disciples are also destined to enter the court, control the power, and do a great career, especially Zhang Juzheng, who is likely to become the controller of the entire Ming Dynasty in the future, leading the Ming Dynasty to Zhongxing.

He naturally hoped that his disciples would be able to get in touch with and understand these new technologies and things as soon as possible, so that these disciples would consider using these new technologies and new things when they were in power, and the Ming Dynasty would also become ever-changing because of this.

To put it bluntly, the equipment developed by Wang Xuan is a few drilling machines and grinding machines, and Zhang Juzheng and others have also seen a lot of drilling machines and grinding machines, so they have long been surprised.

However, these drilling machines and grinding machines are much larger than the previous drilling machines and grinding machines, because Wang Xuan took into account the output strength of the steam engine, and deliberately increased the size of all the beds, and these drilling machines and grinding machines can process steam pistons with a diameter of up to three feet!

This guy is three feet taller than half a person, and the equipment he developed can be imagined, even if Zhang Juzheng and the others have seen a lot of knowledge, they are still surprised when they see such a huge equipment.

Yang Cong was not too surprised, no matter how big the equipment was, he had seen it, in the factory of later generations, dozens of meters, or even hundreds of meters of equipment could be seen everywhere, and there was nothing surprising about these "little things" that were more than ten meters long.

He looked around all the equipment with great interest, and then asked excitedly: "Sir, have you tried it, how long does it take to make a steam engine now?" ”

Wang Xuan was also a little excited: "This depends on the size, if it is a steam engine of about one foot, with these beds, you can make a set in a day." If it's about three feet, I'm afraid it will take four or five days to make a set, because it's too big and heavy, and it's not easy to carry or fix. ”

Yang Cong nodded again and again: "That's okay, let's do it about one foot first, do it in large quantities, don't stop, do as much as you can, anyway, the general drilling machine and grinding machine with about one foot is enough, let's do a few hundred sets of him first." ”

When Wang Xuan heard this, he couldn't help asking: "What about the steam locomotive?" Didn't you say that the thing was ten zhang long and one zhang wide, and that a steam engine of about one foot could push it? ”

When Yang Cong heard this, he couldn't help but smile proudly: "Hehe, sir, you don't understand this, in fact, the main thing to promote a thing is not how heavy the thing is, but how much resistance you have to overcome." If the steam locomotive is placed on an ordinary dirt road or stone road, the steam engine of about one foot will naturally not be pushed, but if it is placed on the railway, it is not necessarily, because there is not much friction between the track and the wheels. ”

Frictional force?

He always involuntarily carries some later generations of nouns when he speaks, and sometimes it is really inexplicable.

Wang Xuan couldn't help but be curious: "What is this friction?" ”

Yang Cong looked around, and then ordered someone to take a copper ingot of about twenty catties, put it on the stone slab ground, and pulled Wang Xuan to squat down, then pointed to the copper ingot and said, "Sir, you push it and try it." ”

When Wang Xuan heard this, he was not ambiguous, and directly stretched out a hand and pushed it up.

This guy, the surface of the slate and copper ingots is not polished, and it is quite difficult to push.

Wang Xuan pushed a few times, Yang Cong ordered someone to take a few wooden squares, and at the same time ordered someone to put the copper ingot on top of the wooden square, and said to Wang Xuan: "Sir, you can push it again." ”

When Wang Xuan heard this, he stretched out another hand and pushed, this guy, the wood can be softer than the slate, and the friction on the copper ingot is much more, he can't push it with one hand, and only the two hands can barely push it when they work together.

He couldn't help but look at Yang Cong with surprise on his face, why is it the same copper ingot, and it feels different when pushed on the stone slab and on the wood square?

Yang Cong was not in a hurry to explain, he ordered someone to take a few copper pipes with polished surfaces, and at the same time ordered someone to put the copper ingots on the copper pipes, and said to Wang: "Sir, you can push it again and try it." ”

When Wang Xuan heard this, he stretched out his hand with a puzzled face and tried to push it, but this time, it was easy to push it with one hand.

He couldn't help but look at the copper ingot, and then at the copper pipe, with a thoughtful expression on his face.

Seeing this, Yang Cong couldn't help but explain proudly: "This is friction, that is, when two things come into contact with each other, you want one of them to move the resistance, the same object, placed on different things, the friction is different." Just like a steam locomotive, if it is on a dirt road or on a stone road, it is estimated that a three-foot-thick steam engine may not be able to push it, and if it is on a processed rail, it is estimated that it can be pushed by a few more one-foot-thick steam engines. ”

When Wang Xuan heard this, he couldn't help but nod slowly: "I understand, this friction is really a bit of a doorway, by the way, how are your railways and carriages doing, I have been busy making these equipment all this time, and I haven't even looked at it." ”

When Yang Cong heard this, he couldn't help but be a little ashamed and said: "The railway is simple, as long as the foundation is dug up, some gravel is buried, and then the sleepers are padded and the rails are laid, this carriage is not easy to do, because it is necessary to take into account all the problems of wheel linkage and steering, at this time I will only make a rough flatbed car out, and it still can't be turned, sir, why don't we go and see it together?" ”

When Wang Xuan heard this, he couldn't help but say excitedly: "Okay, let's go, let's take a look, it's just right, I've been bored here for dozens of days, and I want to go out for a walk." ”

They said they were leaving, and soon the group came to the railroad outside the wall.

In the past two months, Yang Cong has already ordered someone to build a railway of about one mile, and a behemoth has been placed on it at this time.

This guy, the thing on this railroad track is indeed quite huge, the length is ten zhang, and the width is about a battle, it looks like a giant ship, not a car at all.

Wang Xuan circled around the huge flatbed cart with great interest, and then couldn't help but be curious: "Such a big thing, can a steam engine of about a foot really push?" ”

Yang Cong nodded without hesitation and said: "A steam engine of about one foot should be greater than the strength of a strong man, this flat car, if there is no heavy object on it, two strong men can push it." ”

With that, he waved his hand and let the two strong guards go to the cart.

Sure enough, the two strong guards didn't have much effort to push the flatbed truck into the distance.

Seeing this, Wang Xuan couldn't help but say excitedly: "This steam locomotive really doesn't need too much strength to push it, Qingfeng, it seems that we are looking for success!" ”

Success in sight?

This thing is not so simple, I don't know how hard it takes to build a railway for nearly 2,000 miles.

Yang Cong's gaze couldn't help but look into the distance with the sample of the "steam locomotive".

Success in sight?

I hope it doesn't take too much time, he doesn't really want to go back to the mountains and forests, and never ask about the world.

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