Datang broom star

Page 2614

The Marquis of Wuyang would not get someone with little knowledge to study mathematics, otherwise it would be embarrassing for the new learners.

Zhao Yan said melancholy: "I still have a lot to learn."

"What didn't you learn?"

Zhao Yan sighed: "Mr.'s knowledge is extensive and profound. Just one study of things can make people immersed in it for decades. Not to mention the knowledge..."

He noticed that Han Wei's face was turning blue, so he asked, "Assistant Han is not feeling well?"

Han Wei forced a smile and shook his head.

If he didn't get up before, wouldn't he have become a disciple of Marquis Wuyang?

At this moment, Han Wei regretted his bowels, and really wanted to slap himself.

Snapped!

He really slapped himself.

This person... I'm afraid there is something wrong with him?

What did you say... crazy.

……

good night!

Chapter 672

When I arrived at Mathematics, I saw a young man being brought in by Han Wei, and someone questioned: "Isn't there no enrollment?"

"Little Zhao."

Han Wei smiled sideways, "Come on."

Zhao Yan was carrying a cloth bag, feeling a little apprehensive.

Han Wei said sternly, "This is Marquis Wuyang's direct disciple. From today on, he will teach in my math school. Don't be lazy, or you will be punished severely!"

Everyone was silent.

Zhao Yan was a little nervous.

Knowing this nervousness, Han Wei smiled, "Just discipline, anyone who dares to make trouble, I'll take care of it."

Zhao Yan nodded, and took out the textbook after Han Wei left.

As Mr. said before, just treat it as a flock of sheep.

But I am still nervous when facing a flock of sheep.

Zhao Yan shivered for a while, and began to force himself to be calm.

"You have... learned a lot, so I won't repeat it."

Zhao Yan opened the textbook, lowered his head and thought, "The change of the state of matter... This section is about the change of the shape of objects..."

He lowered his head and said according to the points taught by Mr.: "The melting of solids, for example, how does iron ore become liquid? It absorbs heat. After stopping heating, the liquefied iron will gradually solidify. During this process, the liquefied iron Iron emits heat all the time... that's exotherm..."

A student raised his hand, but Zhao Yan kept his head down and didn't see it.

"gentlemen."

Zhao Yan raised his head, his face flushed, "What's the matter?"

"Sir, what is the use of this reasoning?"

Zhao Yan said without hesitation: "Knowing this characteristic of objects, for example, water vapor... water vapor will eventually turn into water, so the process from gasification to water is a process of exothermic heat. Can the heat be used in other places? For example, Mr. said that the power of steam is infinite, if this power can be used, can it drive those huge vehicles?"

As he spoke, he asked someone to get a small stove, and took out a small kettle from his bag.

The little kettle is cute.

"This kettle was made by a master craftsman. The seal is very good...The seal is the isolation from the outside world. Now I put a wooden stopper on the spout...Please take a look."

Everyone thought it was a trick.

What can steam do?

Someone muttered, "The last time someone was washed by steam, the skin on his face was like something, it collapsed immediately, it was terrible."

The water gradually opened.

But because of the cork, the kettle was vibrating, but only a trace of water vapor rushed out.

Zhao Yan said, "Look at the cork on the spout."

Everyone stared at the cork...

Snapped!

The cork was suddenly rushed out by the steam, and rushed to the opposite wall with a bang.

The cork rebounded and hit a student in the shoulder.

"Ow!"

The students screamed.

It wasn't excruciatingly painful, but the sense of dread terrified him.

Everyone stared blankly at the student.

Zhao Yan went down to pick up the cork, and said with a heartache, "I'll have to cut the cork myself again later."

He blew on the cork, looked up, and saw the stunned looks of those students.

"This is a cork. What if the opening is made smaller and the cork is replaced with an iron nail?"

"People will die!"

This is the power of steam.

The expressions of the students were excited, and someone stood up and said, "Sir, is this the way to investigate things?"

what do they mean?

Satisfied...or not?