Heaven's Formula

"How did the water... move?"

"It feels like being sucked up by something!"

The children's interest was immediately aroused.

"Everyone may wish to think about why such a phenomenon occurs." Xia Fan looked at the crowd again - in fact, he had the entrustment of arranging the Privy Council among the observers, just to prevent the silence caused by no one answering .

But this time someone gave the answer ahead of time.

"Could it be that what you want to say is that because the gas in the bottle is exhausted, the gas outside squeezes the water surface and pushes the water into the bottle?"

"Correct." Xia Fan followed the prestige with some curiosity, and it was a little girl who caught his eyes.Judging by her location, she should be a guest invited by Fang Xiandao.

To be honest, although this experiment is classic, it is not as shocking as the hemisphere experiment in terms of perception. It takes a circle to understand the principle.The other party seems to be young, but he can quickly think of this level. Could it be - is she also a living dead?

"Then can I ask a few more questions?" Qian Yan stood up from the chair, which made her suddenly fall a bit shorter, "The person in front, please make room."

Probably because they had never seen such an imposing little girl, everyone involuntarily vacated a passage.

"Lord Qianyan..." Fang Yanni's face turned pale.

"Don't worry." Fang Xiandao said soothingly, "The Xia Fan I know is not the kind of person who bullies others."

On the other side, Xia Fan nodded with interest, "Of course, you say."

"Since there is pressure in the air, why don't we feel tired, even if we relax, we won't be crushed?"

"It's the same as this bottle, because there is air in our body, and the inside and outside are just offset. If the air is taken out, the weight is enough to press a person."

"What exactly is air? Does it have a substance? Can it be touched directly?" Qian Yan asked.

If it is the theory of reality in the past, it will definitely avoid answering this kind of question directly, and instead talk about some mysterious and mysterious principles.

"Of course it does." However, Xia Fan did not forcefully change the subject, "You can understand gas as a kind of thinner water, so when the temperature is low enough, it will freeze like water and become visible to the naked eye. "Ice lump" - I think at that time, you may be able to see more intuitively that you are touching a kind of entity."

"Air—can it be frozen?" Qian Yan couldn't help being stunned, she definitely didn't expect to get such an answer, "How low is the temperature?"

"It's much lower than the freezing point. This temperature may be difficult to achieve at present, but as long as you work hard in this direction, I think you should be able to see it one day-isn't the frost formation technique condensing the water vapor floating in the air into ice?" ?"

Qian Yan showed a pensive look, and she raised her head after a long time, "These are just your speculations, right?"

Xia Fan did not deny it.

She hesitated, "In other words...whether this conclusion is correct is still doubtful."

"I know it is really unimaginable. This is also a great joy of studying things: from the details that can be seen everywhere, deduce the principles behind things and apply them to a wider range of fields, even if it is counterintuitive." Xia Fan turned to the excited Students, "Everyone be quiet! I have another experiment prepared that will show you that not only does air fill you up like water, but people can do incredible things with it!"

This experiment is no longer limited to the size of a glass bottle, but takes the world as the stage.

A simple fun experiment of air pressure certainly couldn't satisfy Xia Fan. He tried his best to make this open class the first shot to make the school famous, so he didn't hold back at all.

And to demonstrate the fascination of air, what could be more impressive than a representative machine that combines various aerodynamic studies and represents the conquest of the sky by human beings?

Under his signal, two guards carried a biplane into the school hall.

Although its size can only be said to be at the model level, it immediately attracted everyone's attention with its unique shape - it looked a bit like a kite at first glance, but everyone soon found that it was much thicker than a kite, and its size was close to half a person It is tall, and the wings are more than an arm.The thing didn't move a muscle when it was on the ground, and its weight was evident.

The next step is to build a runway about [-] meters long with smooth wooden boards.

Xia Fan originally thought that the key to the biplane model - the electric motor was difficult to polish by hand, but Mo Yun gave him a surprise. The slender iron rod that acts as the rotor was precisely shaped by the latter with precise hands. .In contrast, the copper wires and magnets surrounding the rotor are just the experience accumulated in the four-wheel drive era, and it doesn't take much work.

It is two sets of indigenous capacitors that provide energy for the engine.They are made of layers of gold foil and lacquered paper, which are also coated with sealing wax to prevent the insulation from being broken down, so that the electric charge does not fly up and down.

To charge the capacitor is a streamer technique.Even after thousands of shock techniques, Xia Fan burned several trial products before he mastered the strength of charging the earth method capacitor.

Of course, he can also hold the wire to directly provide energy for the model machine, but this kind of "wired remote control" is easily reminiscent of a kite, and it inevitably lacks the feeling of freedom and wind.

"What is this?" Qianyan couldn't help asking.

"A vehicle that allows people to fly in the air, but it's just a model now."

"Soaring... in the air? You mean, it can fly?"

This sentence is also a question for everyone, after all, the model machine looks too heavy and clumsy.

"Because the air flows like water, as long as it is used properly, it can also support things that are thousands of times heavier than itself, just like a ship that weighs a thousand tons can only float on the sea." Xia Fan replied with a smile.Seeing that everything was ready, he pulled the switch to connect the circuit.

The propellers at the nose of the aircraft spun rapidly and made a huge buzzing sound!

The motor needs no power assist, it will run at maximum twist whenever power is available.

Driven by the propeller, the biplane began to move forward slowly, getting faster and faster.Until the pressure difference obtained by the upper and lower wings exceeded the weight of the aircraft, it seemed to be lifted up by a pair of invisible hands, and it suddenly left the ground under the incredible eyes of more than two hundred people, roaring into the air!

The scene was silent for a while.

Xia Fan knew that the two sets of capacitors could only run for a few tens of seconds before it would fall to the ground under the pull of gravity.But just these tens of seconds are enough to leave an indelible impression in people's hearts.

Chapter 242 It's a complete defeat

Looking at the rising wood bumps, Qian Yan couldn't be more surprised.

Not relying on the ability of alchemy, but relying on the power generated by oneself, let something heavier than a goose feather fly into the sky, just because he realized that there is air flowing like water around him——

If this does not count to see the big from the small, what else counts?

She doesn't have much interest in Gewuxue, just because she has seen many Confucian masters who talk about theory but do nothing.

This is the first time Qian Yan has seen a Gewu scholar who directly obtained such an astonishing result by starting with the things he is accustomed to around him.

At the same time, another thought came to her mind.

Now that Xia Fan has proved that people are "soaked" in the air, and that air is also a real substance, does the saying "as long as the temperature is lowered enough, you can see the solidified air" have quite a high value? Credibility?

She suddenly had the urge to give it a try.

Over the long years, impulsiveness has become an uncommon emotion for her.

I thought I knew a lot and lived just to keep my promise, but now the world seems to be a little fresher.

Perhaps... this is what Investigating Things and Zhizhi should look like.

……

"This guy, no wonder he asked me for help mysteriously before, so this is what he was messing with." Mo Yun, who was standing on the second floor of the command hall at the north end of the square, couldn't help complaining.

"Why, he didn't tell you what he was going to do?" Ning Wanjun asked with a smile.

"No." Mo Yun sighed, "He only said that he needs a smooth and well-proportioned iron rod to be used as the rotating shaft of the new device. Blacksmiths can't do this, only me, who is a sense of energy, can do it. .I thought he was so dedicated to improving the mechanism beast."

"Is this thing bad?"

"Okay, of course it's good. Or it can't be described as good or not." Although Mo Yun was a little unwilling, he had to admit that this wooden frame that looked like a large kite had unimaginable potential.According to what Xia Fan said in his lecture, as long as the air flow is used properly, it can even carry many people to the sky like a boat. What kind of concept is this? Even alchemists in the world, few people can touch the sky.

Her most proud work so far in her life is the celestial motion and the mechanism beast built on top of the celestial motion.But now, before the reputation of the mechanism beast spread, it had already met a powerful challenger.

Most wonders can be judged by whether they are good or not.

But some strange things are epoch-making as soon as they appear.

She had a hunch that the "two-winged wooden kite" in front of her... was such a thing.

If you take it to the Strange Object Appreciation Association to participate in the judgment, no matter what the public loser puts out, it will be mediocre in front of it.

"I think the mechanism beast is also very good." Ning Wanjun seemed to see her thoughts, "If I had to choose, I would like your invention even more."

"Why?" Mo Yun asked unexpectedly, "Don't you want to experience the feeling of a bird? And if it is equipped with special weapons in the future, this kind of autonomous flying wooden kite will definitely be a great weapon for the army."

"That's right, but it will be very difficult for the enemy to fight back." Ning Wanjun patted his good friend on the shoulder, "I still prefer weapons that can charge head-on and tear the enemy apart with both hands. So don't fall behind Progress, I'm still waiting to drive it into Gyeonggi."

……

"What the hell happened?"

In the teahouse, Mr. Chen couldn't help frowning and asked.

No one can answer this question.

Anyone who looked through the binoculars noticed that there was a brief stagnation in the square of the Privy Council Mansion. Everyone turned their heads and looked at the mid-air above the gate of the courtyard, as if there was something strange somewhere.However, everything was normal on the street, and the flow of people was still dense, and no one noticed any changes in the sky.

Then loud shouts broke out in the mansion, and even here in the teahouse, a little could be heard faintly-this is enough to show how enthusiastic the voices were on the spot!

Aren't they just a class?

Why is it so noisy like a market?

Zhou Dacai frowned, he knew that once Xia Fan appeared on the stage, the follow-up plan was a bit stretched.No matter how outrageous the other party's behavior is, he is still the head of a family with integrity. This attitude of not hesitating his own reputation to stand in the school will greatly shake the criticism of Liu Ruyan's identity.She is indeed from a lowly background, but others will only see that Fu Cheng is also a teacher in the school—if Tang Tangzhou Shepherd wants to recruit disciples, all kinds of talented people will be able to line up two blocks from his door. outside.

Perhaps only by implementing the third point as soon as possible, starting from the relationship between Xia Fan and Liu Ruyan, can it be possible to recover the disadvantage.

"Brother Zhou, a new letter has arrived!"

Zhou Sheng frowned, "Show it to everyone!"

This time the letter was simpler, only one page, one sentence.

"This thing... is so interesting."

"Whose classmate is this person?" Mr. Chen shouted angrily.

"Uh..." Mr. Hu raised his hand cautiously and said, "My brother is usually quite reliable..."

Bah!

Zhou Sheng slammed his fist on the table.

He suddenly felt ashamed and humiliated. Since he was listed in the provincial examination, where he went is not the focus of attention. As long as he has an idea in his heart, he will rarely fail after implementing it. In a situation like this where no response is received at all, he It was the first time I encountered it.It was as if he was playing a one-man show by himself from the beginning to the end of this matter.

The next course was replaced by an alchemist from the Privy Council.

Zhou Sheng recognized the other party—the previous recorder, Xue Zhigeng, Master Xue.

The content of the talk seems to be related to the common sense of magic.

At four o'clock in the afternoon, all the low tables and straw mats were removed. Just when everyone thought that the first day of the school was over, an unexpected "teacher" appeared on the square.

"I'm not mistaken..." Mr. Hu murmured, "Isn't that Her Royal Highness Princess Guangping herself!"

Ning Wanjun's appearance on the stage made the teahouse become completely silent.

Although the princess has never participated in the provincial examination, no one will question whether she is qualified to be a teacher - on the contrary, if there is a chance to have a relationship with the royal princess, even the scholars present can't help it My heart throbbed.

"Ahem, I'm sorry, Brother Zhou... It seems that we can't help much."

"Yeah, forget it this time."

"You're just a young man, there are so many beautiful girls waiting for you in the drunk brothel."

After one person left, soon there was a second person, and a third person.

In less than a moment, all the poor scholars he invited left, leaving only a group of people who often party.

At this time, new stationery was delivered to the teahouse.

The class taught by the princess is called "Physical Education".

"This sport... what is it?"

"It feels like a military drill?"

The few remaining people talked with forced smiles, but their tone of contempt was no longer the same as before.

However, Zhou Sheng has no time to take care of this matter—no matter what sports means, or how absurd it is to run around the square with a group of children, the moment the princess shows up publicly, it means that his plan has been completely defeated.

Chapter 243 Fang's Censor

"Now I know why you let them eat in school." Ning Wanjun took the towel from Qiuyue and wiped off the sweat from his forehead.

After a physical education class, the students were so tired that they staggered to and fro, while the princess only broke out in a little sweat, which made Xia Fan intuitively feel the other party's unfathomable physical strength.

"This move is also out of helplessness. Although they are all school-age children recruited from Jinxia City, their family backgrounds are different." He replied with a smile, "If we let them solve it at home, some people will definitely be hungry. stomach to class."

"But how much will it cost?" Qiuyue clicked her tongue. "The books are free, ink and paper are provided, and now even three meals are provided by the school. Master Xia, this may not be a long-term solution."

"If it's another city, it's true. But Jinxia City is different - as long as there is a way to transform these students into producers, the returns can far exceed the initial investment." He paused, "Of course, This initial investment will be relatively long. Fortunately, the Wang family sponsored us and gave Jinxia the opportunity to carry out a comprehensive education."

The princess laughed out loud, "Sponsorship, it doesn't sound like a good word."

"No, it's obviously a very normal word."

At this moment, she is neither wearing a court gown, nor is she wearing armor and holding a sword. In order to play an approachable teacher, she only wears a short-sleeved skirt gown. Liu Hai looked like a high school student who had just finished participating in club activities and was planning to go home.

"Huh? Are you looking at me?" Ning Wanjun noticed his gaze, and turned around with her hands behind her back, "How do you feel?"

"It's quite...natural."

"So you like this style?"

"What style?" Xia Fan raised his eyebrows.