Datang broom star

An official muttered, "It's a god."

Jia Pingan heard it, and said with a smile: "Mother Thunder and Mother Lightning? The world is so big, and there are so many lightning strikes in the whole world every day that Master Thunder and Mother Lightning are too busy."

He continued: "Where do the clouds in the sky come from?"

Cough!

A group of people are confused.

Jia Pingan looked at Wang Kuan and said calmly, "Doesn't the Imperial College even know about this?"

Zhao Yan wanted to laugh out loud, but held back.

"Pfft!"

The scumbag didn't have this taboo, and just burst out laughing.

It's too bad sir!

"Everyone who travels north and south will find a very interesting phenomenon. In arid places, there are few clouds in the sky. But in humid or watery places, clouds often appear in the sky. Why is this?"

I will teach you the cognition of the world in future generations little by little.And you will become the kindling, illuminating the entire Tang Dynasty, and saving the Tang Dynasty from ignorance... Tell them that this world is not what they see and think.

"In the kitchen in winter, you can see the water vapor transpiration when cooking. The same is true outside, the wet land, rivers, lakes and seas, these wet and water systems will produce water vapor under the sun, and the water vapor will continue to rise, at a certain height Build up, build up, and eventually form a cloud."

"absurd!"

A teaching assistant said angrily: "It's just ridiculous!"

Jia Pingan looked at him, "Why can it rain in the clouds?"

The teaching assistant said: "There is rain in the clouds."

I don't understand, but everything feels so natural to me...

"You are taking ignorance as elegance, and you will only mislead your children!" Jia Pingan felt that the biggest problem with Datang was that it did not have a group of good teachers. "You want to say that water appeared suddenly? Was it made by the gods? Your stupidity lies in All unknown affairs are attributed to the omnipotence of the gods, but the gods are not free, as I said, it is impossible for the gods to stare at us, what is the difference, it is not a god, but a servant!"

"You... blasphemy!"

The teaching assistant seems to be a devout believer.

What an idiot!

Jia Pingan said to the students: "The water vapor in the kitchen is blocked by the beams, so the beams are wet and even drips. However, the water vapor rising outside, because there is no obstruction, directly reaches the sky and forms clouds. These clouds will Carries a charge, and when conditions are right, discharges..."

A student raised his hand, "Mr. Wuyang, is this charge the one we learned?"

Jia Pingan nodded. He passed on these basic knowledge to the students through Zhao Yan, and now it's time to verify it.

The student said excitedly: "I have been electrocuted several times when I touched iron objects. At first I thought I was stabbed, but there was no wound on my hand. After learning about electric charges, I realized it was static electricity."

He said to his classmates in that persuasive tone: "It's really comfortable to be shocked by static electricity..."

Another student said: "The teacher taught that this kind of situation usually happens in winter, because it is dry in winter. You can wash your hands and then touch ironware, or get a small ironware and hold it with your whole hand to release the blood on your body." static electricity."

"What are they talking about?"

The students discussed happily, but Yang Dingyuan was full of confusion.

The same is true of Wang Kuan.

What static, what discharge... what are you talking about?

He suddenly realized that this is new learning!

Jia Pingan's eyes... what kind of eyes are they?pity, disdain...,

He pity me?

How profound is the old man's knowledge, and how profound is the old man's attainments in Confucian classics, you... are you worthy of pity on me?Shuzi is rude!

A wave of anger surged up, and Wang Kuan couldn't help coughing dryly, but then he was at a loss.

He didn't understand what Jia Pingan said, it sounded like he was listening to a scripture.

He glanced at Yang Dingyuan, then at those officials and teaching assistants... his face was bewildered.

"What are they talking about?" An official was about to go crazy, "They said it so cheerfully, but why does this old man sound like... like absurd nonsense, but I don't know how to refute it."

Another teaching assistant had an ugly expression on his face, "We've been teaching these things in mathematics for the past few years. Do you still remember that the mathematics students looked at us with strange eyes...it seems like a sense of superiority."

This is true when everyone thinks about it.

"Why are they superior?" Wang Kuan was furious. "They have learned such fallacies from Jia Ping'an, and they don't feel ashamed. How can they have a sense of superiority?"

The official said blankly: "Have you paid attention to what Professor Wu Yanggong said? He said that the world is within the reach of the five senses, lightning, thunder, clouds and water vapor. This means interpreting the whole world. He is so big. Is it true that Xinxue really has such abilities? If there is...everyone...everyone, we are in big trouble!"

Wang Kuan said firmly: "Impossible. How big is the world? How many unsolved mysteries in the world? How can they explain it clearly?"

On the side, Guo Xin, the director of the Imperial College, was fascinated by it.

Jia Pingan interrupted the discussion of the students and said: "Continuing the previous topic, clouds and rain are produced because of this principle. As for the proof, think about fog, water vapor evaporates, and small water droplets are formed in the air. This is fog. .You walk in the mist, and it won't take long before you get wet..."

"I see?"

Li Yuanying said excitedly: "It turns out that the fog and clouds are formed in this way."

"My son doesn't know this yet." Yuchi Xunyu felt that his son was as ignorant as an idiot, "My son always said that he had learned something about the five classics of justice, but now I know what the five classics of justice are. , it’s not as good as new learning.”

"Water vapor is rising, but the higher the altitude, the colder it is, so the water vapor condenses into water, and countless water droplets gather together, and gradually gather to form large water droplets... When the weight cannot be maintained, these large water droplets will fall down, which is It is the formation of rain."

Everyone was listening, even Wang Kuan couldn't help listening.

"This is the cause of the clouds and rain, but this is only a corner of this world. The world is so big that we can't imagine it, but I want to mention one thing, don't myth the unknown."

Jia Pingan said heavily: "This is very stupid!"

A student said excitedly: "Mr. Wuyang, in the past, when there was a drought, all places prayed for rain, but most of them were useless. Occasionally, when it rained, they said that it was the gods who took pity on the mortals and rained down on the mortals. Or someone's benevolence I was moved by the heaven and the earth, so the rain fell from the sky. Now that I know the formation of clouds and rain, I know that these are all ignorant actions..."

Wang Kuan's body shook.

The teaching assistant said in a low voice: "Praying for rain is a common thing in various places. Jia Ping'an is so bold that he attributes the rain to some kind of water vapor, which is blasphemy. This old man thinks he can be impeached..."

Nobody moved.

The teaching assistant was puzzled, "Do you want to sit back and watch him become famous?"

Director Guo Xin said in a deep voice: "every family has a kitchen, and everyone can see the steam when cooking. The steam evaporates, and when it rises to a high altitude, it condenses into water droplets when it is cold... Go to the kitchen and see, the water vapor will also condense. Condensed into water droplets, on the beams, on the lid of the pot...the water droplets gathered into clouds, grew bigger and bigger, and eventually fell into rain...This set of arguments is flawless, and he is flawless!"