The road of Suzaku Street is a bluestone pavement.

Li Kuan felt that it matched the houses on both sides, and as the main road of Chang'an City, all the bluestone slabs were ground very smooth.

Therefore, during the construction of several cement roads, the road of Suzaku Street was not dug up.

The pouring rain outside was still falling, and Li Kuan sat on the crocodile leather sofa, thinking about how to explain the phenomenon of thunder and lightning for a while.

Today's matter is not particularly secret, and the little eunuch who came to pass the word of mouth had already secretly told Li Kuan about the situation in Hanyuan Palace.

"Lord, the ghosts and gods say, although we don't believe it, but in Chang'an City, there are still a lot of people who believe it. In the previous dynasty, there was a palace in Daxing Palace that was struck by lightning, and various rumors circulated at that time, which was very unfavorable to the royal family. If we can't make it clear this time, maybe someone is really putting the blame on our Big Ben. ”

Wang Xuanwu sat opposite Li Kuan and told him about his worries.

"I understand! However, it is still a bit troublesome to uncover the mystery of thunder and lightning, which involves more advanced knowledge of Gewu, which even the students of the Gewu Academy of Guanshishan Academy may not be able to understand, and those ministers of the DPRK and China are even more difficult to understand. ”

Wang Xuanwu's worries, Li Kuan naturally thought of it.

Although this concern seems very boring in the eyes of future generations.

And then at this moment, it just really exists.

"I heard that Li Chunfeng of the Taishi Bureau is proficient in the astronomical calendar, and his son Li Yan is also studying at Guanshishan Academy, do you want to ask Li Chunfeng's opinion at that time?"

Although he can predict the changes in the weather based on the changes in the wind and clouds, he only knows the reasons but does not know why. Talking too much will only complicate the matter. ”

Li Kuan didn't think anyone could explain the phenomenon of thunder and lightning more clearly than himself.

However, the fact that Big Ben was struck by lightning also made Li Kuan aware of a problem, that is, the lightning protection of buildings.

"That is, the luck of Hanyuan Hall is that it has not been struck by lightning yet.

If this lightning directly hits Hanyuan Palace, then the impact is estimated to be many times greater than now.

It's not surprising that there are even some other disturbances.

After all, at that time, Li Shimin and the ministers of the court were discussing things in the Hanyuan Palace.

The wheels of the carriage rolled across the wet ground and made a splash.

Soon, Danfeng Gate appeared in front of him.

……

"King Chu, you came just in time! This Big Ben was installed on the wall of Daming Palace, and now it has attracted thunder, what kind of heart do you say you have? ”

Li Kuan had just stepped into the Hanyuan Hall with one foot, and was seen by Li Shenrune.

At this time, Li Kuan didn't say anything to everyone, and directly theorized with Li Shenfu first.

"Zongzheng, it's going to rain this day, my mother is going to get married, what does thunder have to do with Big Ben?"

"Why doesn't it matter? There are so many things, what is bad about thunder and lightning, but it is a big Ben, isn't that what is wrong with it? ”

"In Chang'an City, there are not 1,000 but 800 people who have a clock at home, according to what you said, aren't these people going to be struck by lightning?"

As soon as Li Kuan's words came out, all the ministers present sighed in their hearts.

They really have a grandfather clock in their house.

Although the grandfather clock is not as big as Big Ben, it is essentially a thing.

If it is really like what Li Shenfu said, wouldn't it be dangerous when there is thunder in the future?

"Hmph, it's the Big Ben in the Daming Palace today, and tomorrow it may be somewhere else. King Chu, if something really happens, can you afford to take responsibility? ”

"I can't afford it!"

Li Shenrune: ......

"Kuan'er, speak well!"

Li Shimin couldn't stand it anymore.

Li Shenfu is now a person who is over the age of six, if he is angry to death in Hanyuan Palace, it will become a royal joke.

"Your Majesty, this thunder and lightning is actually a natural phenomenon. Although electricity is something that cannot be seen or touched, it does exist. I don't know if you've noticed, but when the weather is dry in winter, you use a comb to comb your hair, and when the comb is close to your hair, your hair will involuntarily float towards the comb. Why is that? ”

"Why?"

Li Shimin asked very cooperatively.

He was accustomed to Li Kuan coming up with some fresh theories every once in a while.

It hasn't been long since this bacterial and microscope turmoil, and now it seems that something is going to happen again.

"Because the comb, in the unpredictable process of being with the hair, generates electricity. Electricity in this world is divided into positive and negative electricity, and positive electricity and positive electricity are mutually exclusive, but positive electricity and negative electricity attract each other. Just like this thunder and lightning, in fact, it is also because there are different clouds carrying positive and negative electricity in the clouds, under normal circumstances, they are distributed in different positions without incident, when the wind and clouds change, when the clouds carrying different charges meet, there will be a charge collision, and the thunder and lightning that we see are produced in this way. ”

Li Shimin: ???

Li Shenrune: ???

Fang Xuanling: ???

After Li Kuan's words were finished, he found that he had become the center of Hanyuan Palace.

Everyone stared at themselves like monsters.

"Ahem!"

Fang Xuanling was really there, seeing that this atmosphere was too weird, he couldn't help coughing lightly and opened his mouth to break the silence.

"His Royal Highness the King of Chu, what kind of positive and negative electricity is this, this thing...... Please forgive me for being straightforward, these are the words of His Royal Highness the King of Chu and your family, everyone can't understand it. ”

As soon as Fang Xuanling opened his mouth like this, Li Shenfu immediately became excited.

"That's right, you said these things in a fog that no one understands, do you want to show that your level is superb or what? The old man has lived for a long time, and he has eaten more salt than you have walked, and he has never heard of such a statement, do you think that there is no one in the court to balance you, and he wants to do something that refers to a deer as a horse? ”

"His Royal Highness the King of Chu, you just said that friction causes electricity, is there any other way to further prove this? After all, it's just the phenomenon of combing your hair, and it's still hard to believe the statement of electricity. ”

Fang Xuanling saw that Li Shenfu had deviated from the topic by following his words, and immediately turned the direction again.

"Lightning and thunder, that is the power of heaven and earth. Your Royal Highness the King of Chu, it's too unbelievable to compare this electricity with a comb for combing your hair, right? ”

The eldest grandson, Wuji, naturally would not miss the opportunity to suppress Li Kuan.

Anyway, with Li Shenfu rushing in front today, it won't be strange to say anything by himself.

"There are big and small amounts of electricity, just like the flow of water is big and small. What is the power of a drop of rain? Who cares about its harm? But when countless rains come together, it's different. Looking at the surging Yellow River, once you encounter a flood, do you still think that a drop of rain is nothing?

This amount of electricity is the same, the charge on a comb is naturally nothing, and it is even difficult to attract everyone's attention. But when countless charges accumulate together, they will form an earth-shattering sound, making people feel that it is the power of heaven and earth. ”

When it comes to playing tricks, Li Kuan is naturally not afraid of anyone.

Not to mention the eldest grandson Wuji and Li Shenfu, even if there are a few more, they are not afraid. Pi Phi Reading.com

"Speaking of which, you're still alone there, how do you prove that this thunderbolt is the kind of electricity you say?"

Li Shenfu snorted coldly, obviously not believing Li Kuan's statement.

"Kuan'er, haven't you Guanshishan Academy's Gewu Academy always liked to use experiments to prove what you said? Is there any way to prove the existence of this electricity, the principle of this thunder and lightning? ”

Li Shimin said on the side.

With his understanding of everyone, if he didn't stand up, it was estimated that this quarrel would last until dark.

"Your Majesty! The existence of this electricity can naturally be proven, and Weichen has a way to pass down the thunder and lightning and make people feel the existence of electricity. Of course, this method is more dangerous, so Wechen has not proposed it before. ”

Li Shimin's face, Li Kuan naturally wants to sell.

In fact, on the carriage entering the palace, he basically thought about how to solve this problem.

Later, Franklin's kite experiment entered the textbook.

Although Li Kuan often stole it during class back then, he still didn't leave behind the things he should have learned.

"Oh? Can you prove it? How to prove it? ”

Li Shimin selectively ignored the dangerous content of the experiment.

What is this thunder and lightning, is it true that there is a thunder and lightning mother in the sky?

This question, no matter who it is, wants to be able to figure it out.

"That's right, your Royal Highness the King of Chu, can you make lightning? Can you still make lightning appear the way you want it to? ”

Li Shenfu obviously didn't believe Li Kuan's statement.

Experimental experiments, this is the thing that the Gewu Academy mentions the most, and he hates to hear it the most.

"It's impossible to make lightning like the one outside. But simulating lightning is something that can be done sooner or later. It just so happens that there have been thundershowers almost every day recently, and I will arrange for tomorrow or the day after tomorrow to find a suitable time for everyone to see what electricity is like. If anyone is interested, they can even experience it for themselves. However, the experiment is risky, and if you are unlucky, you may be electrocuted. ”

"His Royal Highness the King of Chu, can you really have a way to say that the thunder and lightning are drawn down? Can I participate in this experiment? ”

After being called over just now, Li Chunfeng, who had been staying in the corner, couldn't help but speak.

As an official of the Taishi Bureau, he wanted to know more than anyone else the cause of the lightning and thunder.

During this time, he also frequently went to Guanshishan Academy to communicate with Zhu Tong, Zhu Yin and others, and had a deeper understanding of the changes.

originally thought that his ability had risen to a higher level, but there were few people in Datang who could be better than him.

Unexpectedly, Li Kuan opened a new door for him.

Electricity!

What is the difference between positive and negative electricity in this thing, and what friction is related to, and it can actually ......

Li Chunfeng felt that he had once again returned to the state of school when he was young, and he was full of energy.

As for Li Kuan's words that the experiment was dangerous, he selectively ignored it.

"Naturally, it is possible, this experiment is not as complicated as everyone thinks, and the things needed are easy to prepare, but you have to choose the right time to succeed."

"In that case, let's wait until the results of your experiments come out."

Li Shimin didn't want to hear Li Shenfu and Li Kuan's crooked argument there.

One is Zong Zhengqing, his uncle.

One is the prince of the dynasty, his own son.

They quarreled with each other, and no matter how they looked at it, they ended up losing their face.

"Humph! The old man will wait and see, King Chu, how do you lie like this! ”

Li Shenrune's face showed a stubborn expression.

As for the other ministers in the Hanyuan Palace, most of them had the mentality of watching the excitement.

This matter has little to do with them.

……

After the rain, the sky is clear, and after all the ministers have left the Hanyuan Palace.

Li Shimin stayed and left, and suddenly wanted to know more about electricity.

I don't know why, he always feels that Li Kuan's words just now are not complete.

In terms of the level of things, Li Shimin admits that he is not as good as Li Kuan.

But in terms of the level of people, ten Li Kuan is not as good as one Li Shimin.

"Kuan'er, what is this electricity for? If this lightning is really what you said, then is there any way we can avoid being struck by lightning again? ”

There were no outsiders left and right, and Li Shimin asked for advice with a rare humility.

"Your Majesty, although Weichen is still pondering the usefulness of electricity, I vaguely feel that this electricity should be of great use. Even decades or hundreds of years later, our lives will be fundamentally changed by the discovery of electricity, but this will require a process. As for the matter of preventing lightning attacks mentioned by Your Majesty, this is relatively simple, and Weichen has a way to make the Daming Palace in the future, even if it is directly hit by lightning, it will not be damaged. ”

What is the use of electricity, Li Kuan naturally knows it very well.

But the use of electricity is too far away from the current Datang.

The steam engine has not yet been made, just like selling it to the electricity society in one step, how is it possible?

Leapfrog development is not such a leapfrog method.

Of course, something like a lightning rod is not so difficult.

"Oh, what can you do?"

"Speaking of this method, we have to talk about the transmission of electricity. Weichen deduced that this electricity can be transmitted through some substances, but there are also some substances that are difficult or even impossible to transmit. We just need to find something that is more suitable for the propagation of lightning, such as an iron pillar, stand it on the roof, and connect it all the way to the ground. Then when lightning strikes, the first choice will be to attack the iron pillar, and when the electricity strikes the iron pillar, it will be transmitted to the ground, so that there is no need to worry about the roof or city wall being damaged by lightning. ”

Li Kuan tried his best to explain the principle of lightning rod in easy-to-understand words.

As for why he knew that thunder and lightning were more suitable for transmission on iron......

Don't ask!

To ask is to guess!

"It's that simple?"

"That's right, Your Majesty, as long as you make a lightning rod out of an iron pillar, you can solve the problem of lightning strikes. This time the thunder and lightning hit the Big Ben on the Danfeng Gate, in fact, it was also because the shell of the Big Ben was made of copper, which happened to be installed on the high part of the city wall on the Danfeng Gate. The Big Ben itself has nothing to do with it. ”

"I see! So how do you prove the existence of electricity? ”

"Your Majesty, please allow Weichen to sell a pass. Judging from the weather conditions in the past few days, this mystery can be solved soon. ”