"Barrage tendency: There is no need to seal, and the internal and external thermal expansion and contraction can seal the piston. 》

This......

The people of various dynasties looked at the comments on the canopy, and they were a little confused.

They didn't know what thermal expansion and contraction were, but they could keep the steam engine from leaking without sealing.

They didn't experiment with this comment, but they didn't believe it!

In their opinion, this is simply against the law of things!

So they ignored the comment and continued to pick up the scissors in their hands, which they used to cut the animal's fur and seal the steam engine.

After many comparisons, they found that it is better to seal with animal fur, although such sealing materials are not very durable compared to other sealing materials.

But for them, this is not only lower cost, but also easier to replace, and the sealing material of such a material is also more suitable for them to use!

For these people, every money in life needs to be cherished, otherwise a gust of wind blows in life and they will not be able to bear it.

They made the steam engine in the hope that he would improve his life, not let him drag it down!

As for selling their steam engines at a high price, they don't have such extravagant expectations, and they know what they can do!

When the readers of various dynasties saw the comments on the canopy, they remembered the "Huainan Wanbi Shu" by King Huainan in the Western Han Dynasty.

There are sentences in this book about describing heat expansion and cold contraction, but this book has always been used as a collection of Lian Dan, so that no one pays attention to it!

And now the comments on the canopy make them realize that knowledge is everywhere.

They shouldn't be distracted from exploring the world because of some prejudices!

Those who read books also need to find and explore this knowledge to make the whole society more prosperous.

So they collected a large number of books, read them slowly, and then they compiled them into a book and passed it on to future generations!

Qin Dynasty.

The children of the Mo family looked at the comments on the canopy, and they digested it for a long time before they slowly understood the meaning.

They did not have the concept of thermal expansion and cold contraction at this time, and even if they discovered this phenomenon, it was only regarded as a normal natural law.

And now that it is mentioned on the canopy, they understand this truth.

It also made them realize the gap between themselves and the people of later generations.

This knowledge that seemed sparse and ordinary in later generations has become advanced knowledge in their time.

Sometimes, they even think about it for a long time and don't understand the meaning.

But all this is a thing of the past, and this is the canopy from the sky, and the way they learn knowledge becomes learning from the canopy.

This not only broadens their horizons, but also allows them to unconsciously learn more things.

Han dynasty.

Emperor Wu of the Han Dynasty Liu Che looked at the comments on the canopy, and he remembered Liu An, the king of Huainan.

Back then, he learned from Qin Shi Huang, and he has been looking for the art of immortality like Qin Shi Huang.

It's just that his result is the same as Qin Shi Huang, and he didn't find any immortality, but he also compiled a book of "Huainan Wanbi Technique" for future generations.

It not only records the principle of tropical cold contraction, but also how to make tofu brain.

At that time, tofu brain was the elixir he refined in the eyes of Liu An, the king of Huainan, but this elixir was a little delicious, and people couldn't help but spread it!

Thinking of this, Emperor Wu of the Han Dynasty Liu Che began to pay attention to this book.

For him, there is nothing good or bad about the knowledge of the world, even the knowledge of those warlocks, as long as it is helpful to the big man, he can get the treatment he deserves!

, and made a request to the craftsmen to study the book and use the knowledge in it!

Emperor Wu of the Han Dynasty Liu Che hoped that no matter what aspect of knowledge the Han Dynasty had in the future, as long as it was beneficial to the Han Dynasty, it could be used!

The emperors of other dynasties looked at the comments on the canopy, and they couldn't believe that later generations could use the principle of thermal expansion and cold contraction to make the steam engine not leak!

In order to verify whether this method is true or not, some emperors began to implement this method.

But they were disappointed that the steam engine made in this way was not as good as it was said in the sky!

They can only honestly let their craftsmen use other methods on the canopy to make it no longer leak!

Lu Feng looked at the comment, and he liked this comment!

He saw a sentence in the comment area: "Large factories rely on freezing, small factories rely on burning, and workshops rely on knocking." ”

He hadn't been into that kind of big factory, and small mechanical factory, but he had seen a lot of those workshops.

It's just that he still doesn't believe that the steam engine can be completely sealed by thermal expansion and cold contraction.

If it is really baked and it can be cold and shrinked, the products produced in those factories will not need the sealing ring for a long time!

"Little Farming Expert: In fact, it is not as good as manufacturing steam turbines, and the boiling water blowing fan wheel set is simple and easy to build, and the efficiency is higher. 》

The people of all dynasties saw the comments on the canopy, and their eyes lit up.

The steam engine they built was not very efficient for its own reasons.

It's the comments on the canopy now, but they give them a new direction!

So they started to improve the steam engine in their home, and they wanted the steam engine to push the fan wheel, and then drive all kinds of machinery.

To their delight, the steam turbine was not only as simple to manufacture, but also more efficient, as it was said in the canopy!

The emperors of various dynasties were also a little surprised when they saw the comments on the canopy.

Originally, they were surprised to make this steam engine, but they didn't expect that there was another way to use it!

To verify whether what is said on the canopy is true? They started with those craftsmen who began to breed!

And the results did not disappoint them, it turned out that boiling water can still be used in this way!

After verifying, the emperors of each dynasty began to plan according to the manufacturing methods of the two steam engines on Tianmu!

Qin Dynasty.

After Qin Shi Huang asked people to verify it, he began to let people know that Qin knew the track next to me.

It was also at this time that he slowly realized the shortcomings of Daqin.

The train track, which can be easily built in later generations, has its old name of Daqin in this era!

After all, they didn't have that much metal at this time, so they couldn't build a train that could withstand heavy loads back and forth!

The situation encountered by other dynasties was similar to that of the Qin Dynasty, and then they deeply felt helpless!

But they didn't have a solution, even if they learned to make iron in the blast furnace in later generations, it didn't work, for them, a lot of steel didn't happen overnight!

And the era in which they live is the time when the accumulation of knowledge cannot be filled, and if they are in a hurry, it will traumatize the common people!

Just as they were thinking about things, a new video appeared on the canopy!

(End of chapter)