"Hehe, I'm not going to sell it anymore, you all want to know the answer, so keep listening. ”

What Xiao Tian said really made the students in the audience feel puzzled, and they didn't want to miss why, staring at Xiao Tian with all their attention, he pointed to the cylinder model drawn on the blackboard and continued to explain.

"You're wondering what I'm drawing on the blackboard, it's actually a device that uses steam. Xiao Tian drew the shape of the cylinder a few times with the ruler and said: "This thing outside is called a cylinder, which is used to hold steam, and this thing is called a piston, which can move freely." When the steam is injected into the cylinder, it pushes the piston like the lid of a pot, and then there is a connecting rod on the piston that moves. ”

"So, what's the use of this device? Now, I'm going to tell you. Xiao Tian continued to draw a flywheel on the blackboard, one end of the flywheel was connected to the connecting rod, and a simple steam engine transmission was formed.

"This thing is called a flywheel, when the connecting rod is pushed to one side, the flywheel will also rotate, I think you have seen the stone mill! Small stone mill people can push with one hand, the connecting rod is like a human arm, the flywheel is the stone mill, as long as the arm has been pushing hard, the stone mill will always rotate, the flywheel is the same reason. ”

After Xiao Tian finished speaking, he turned to look at the surprised students and asked, "Do you understand what I said?"

In response to his question, the students did not answer immediately, but buried their heads in deep thought, it turns out that steam can still be used in this way, but the power of steam is so weak, it can only push the lid of the pot, can it push the stone mill? And the larger stone mill needs cows, horses, and donkeys to push, can this small steam work?

Everyone basically understood what the president said, as long as they talked about stone mills, everyone had seen them, and stone mills were common items in their lives, used to mill rice, tofu, and flour, and if they didn't have it, it wouldn't work.

If what the president said was true, wouldn't it mean that all stone mills could be propelled by steam in the future? But the strength of the steam was so small that the students expressed deep doubts.

Sikong Zhi thought for a while and raised his hand and asked, "President, can the steam engine you mentioned replace human hands, or those stone mills pulled by cows, horses and donkeys to mill rice?"

Xiao Tian was asked by him, he felt very insightful, very feasible, and a good seedling, he appreciated: "What you said is right, it is true that you can use a steam engine instead of labor, so that people can get rid of the trouble of hand-grinding soybean milk, and the efficiency will be many times faster than manual." ”

"But the power of steam is so small, it can only push the lid of the pot, how to pull the grind?" Sikong Zhi asked again, and he told the question in the minds of all the students at this moment.

When Xiao Tian heard it, he suddenly felt funny, the people here have not seen how powerful the real steam engine is, and they don't know much about it, just like the earthlings, it took thousands of years for people to invent the steam engine, and at first people just used it to blow a spinning ball toy.

"Steam is not what you think, just a little bit of effort, as long as we make the boiler bigger and increase the combustion power, the more steam we put out, the more power we get. The power of steam is not only used to push the stone mill, it can also be used to pull thousands of catties of cars, but also can push millions or even tens of millions of catties of ships, as long as we can do it, the power of steam is unlimited. ”

Xiao Tian's passionate explanation made the students in the hall impatient, and they couldn't wait to get a steam engine out immediately to see how powerful it was.

"President, are you telling the truth?"

"Yes, President, can you really pull a car weighing tens of thousands of pounds, how much strength does it take?"

"That's it, a ship of millions and thousands of catties, that is a ship that requires the immortal master to use mana to propel, can a small steam really work?"

"Well, if that's the case, wouldn't it be as strong as an immortal master?"

The students were very uneasy, as if they had forgotten that this was in the school, and they began to talk about it, and the cake painted by the president was very large, but whether this wish could be realized?

Immortal masters, in front of mortals, will always be god-like existences, and they want to use the power of mortals to pry the status of immortal masters, all of which sounds so unrealistic.

When mortals have the power of an immortal master, will the status of the immortal master be lost? There are as many mortals in the cultivation realm as there are as many as a cow's hair, but there are few immortal masters like scales and horns, when the immortal master is no longer a high-ranking person, how will they feel, will they retaliate against science because of this?

However, it seems too early to say these things now, and there is no need to pursue them, the immortal master will always be an immortal master and has great power in his own right, while a mortal will always be a mortal and small in himself. Technology is just a little thing that mortals make, they don't pay attention to it at all, and these things, they can destroy them with a wave of their hands.

While cultivators pursue strong power, they also pursue a long lifespan, but modern technology is not good, and breakthroughs in genetic research in the future may bring a lot of benefits to mortals.

"Hehe, okay, everyone be quiet, you have doubts, that's natural, but when you see these things later, you will naturally believe it. Now if you don't understand anything about the steam engine, you can continue to ask me, and I will answer it for you here. ”

After discussing for a while, Xiao Tian stopped them.

Everyone fell silent, thinking about what they didn't understand, but the structure of the steam engine was so simple, and they found nothing particularly difficult to understand, so they didn't ask any questions.

After a while, Sikong Zhi asked, "President, who first thought of such a wonderful device as the steam engine?"

This is a question that many students want to know, the steam engine looks simple, but for so many years, no one has figured it out.

"Well, I can tell you about this, the first practical steam engine was first built by a man named Thomas Newcomen, and was used for mining and pumping water. Later, James Watt improved the steam engine, which is the model of the steam engine we see now, this kind of steam engine has a wide range of uses, and I will tell you how to use it one by one in the future. ”

Xiao Tian gave a brief introduction and gave the students infinite expectations, they knew that they could be used to mill rice, cars, ships, and what the president said could also be used in other places, where it was, and they couldn't think of it.

It's just that they were curious about the names of Newcomen and Watt, so they asked, "The name of Thomas, and Watt's is so strange!"

"Hehe, this is the name of some people of special race in my hometown, and I won't feel strange if I hear more in the future. Xiao Tian explained with a smile.

"The principle of the steam engine, you already know how to run it, now I will assign you a task, that is, all of you work together to study and build a simple steam engine, well, for the time being, Sikong Zhi will be the person in charge, do you have any opinions?"

When Xiao Tian's words came out, everyone shook their heads, saying that there was no problem, and sighed secretly in their hearts, Sikong Zhi was really a lucky guy, he was actually taken by the president, and he was the leader among everyone on the first day, and his future is limitless.

Sikong Zhi didn't expect that he would be appreciated by the president, and he was so excited that he didn't know what to say, and he made up his mind that he must lead everyone to build a steam engine, and it will definitely be reused in the future.

Next, Xiao Tian asked them to discuss how to build the first steam engine, three main components of the steam engine, boilers, cylinders, and flywheels. As long as these three parts are built, a simple steam engine is completed.

When they were discussing, Xiao Tian occasionally gave some mentions, he thought that these people wanted to build it in a short time, it was impossible, at present, it was just to familiarize them with the practice, and when they were almost familiar, they could be manufactured in large quantities for commercial sales to make money.

At the same time, I don't know what kind of impact the steam machine will bring to the shark kingdom, and the sale of lipstick here can cause a rush of women, and the sale of steam engines is probably another scene.

Sikong Zhi and other students were discussing how to make a steam engine, Xiao Tian sat on the side, the corners of his mouth were slightly upturned, and he imagined in his mind: On Shark Island, there are steam locomotives coming and going in many places, steam engines are grinding, and the sea is full of steam engine ships.