The publicity effect of Lingji Palace lectures was indeed immediate.

The next day, thirty or forty people came to Chunsong Hutong to visit, wanting to learn more about what science is.

After all, yesterday Zhao Hao just talked about the role of science, but only made general discussions about its content. It’s like later generations want to see the main film. Is there any level of performance of the trailer?

However, when they found out the west gate of Zhao Mansion, they saw a huge wooden sign hanging on the post of Guangliang Gate.

There is a line of eye-catching words written on it, "If you don't understand geometry, don't enter this door."

"If you don't understand geometry, don't enter this sect?" The Confucian scholars looked at each other and asked each other: "What's the geometry?"

Someone suddenly said, "I received a booklet at the gate of Lingji Palace yesterday, one of which seems to be called "A First Look at Geometry."

"No," Wang Wuyang appeared in the door opening, bowed to everyone, and then explained loudly:

"Geometry is an introductory knowledge of this school, but not everyone is suitable for being a scientist. In order to avoid wasting my teacher and everyone's time, a number of "A First Look at Geometry" were specially distributed yesterday. Only those who can understand this book can become my teacher's disciples and teach the true meaning of science."

"That was not what Mr. Zhao said yesterday," someone raised objections: "He said that if you are interested, you can come to Chunsong Hutong and demonstrate the scientific principles to us on-site."

"Oh, that's a popular science demonstration." Wang Wuyang pointed to the gate to the east: "Everyone enters through that gate. Every day, we will take turns demonstrating scientific experiments for the guests."

"That's how..." The guests thought to themselves that although this small science sect was still quite regular.

So they walked to the east gate of Zhao Mansion, where there was indeed another plaque hanging on the door post.

In addition to the "popular science demonstration", there are four big words, and there are also daily opening hours - one for morning and afternoon, each for half an hour.

Zhao Hao added five disciples to Zhao Shizhen, and the six were divided into three classes, each of which came to pick up guests for half an hour in three days. This did not affect learning, and could promote science, and there was no need to pay wages.

~~

The guards at the door invited the guests to the west wing room that was arranged overnight. There was a stove with coal lotus roots and tea and snacks in the room.

As soon as Chen Hou arrived, Wang Dingjue, who was picking up the guests today, came out, and then, under the curious eyes of the guests, he began the first lesson of popular science - "Opening the eyes to the world"!

That’s right, it’s the lesson Zhao Hao taught to Eryang at Yuhuatai.

However, the courseware content has been adjusted. First, I deleted the moon ring at night, and the globe has not been displayed - this is a decision made by Zhao Hao this morning.

This is Beijing City, not the capital city where the emperor is far away. Moreover, Mr. Xu is still watching, which is too subversive and something big will happen.

Well, it will still develop in the early stages, so don’t be slutty.

However, Zhao Hao added several interesting scientific experiments, such as "lighting the lamp in the water", "water flowing to a high place", "rainbow in the water", "copper coins in the oil pan", "kaleidoscope", "eggs floating on water", etc.

These small experiments are both interesting and attractive, and the experimental props are ready-made.

When he is free, Zhao Hao will make some things and explain them to his apprentices so that they can have an intuitive understanding of scientific concepts.

At this time, Wang Dingjue can take medicine according to the prescription...

The guests saw him reaching his hand into the boiling oil pan, and they couldn't help but suck in the air, and some even covered their eyes unbearably.

Wang Dingjue turned out a few copper coins as if nothing had happened. While wiping his hands clean, he explained to the guests that this was because half of the vinegar was added to the oil pan. The boiling point of the vinegar was much lower than that of the oil, so when the temperature was not high, it would open the pot, causing the illusion of boiling oil.

Through this experiment, the guests remembered what the ‘boiling point’ is, and different liquids have different ‘boiling points’.

Wang Xijue threw a raw egg into the bowl again, and the egg slowly sank into the bottom of the water. Then he added two spoons of salt and then, the egg floated back up.

Through this experiment, the guests learned what ‘density’ is. The higher the density, the greater the buoyancy.

They also saw that the heavy iron box floated in the basin - which shocked them even more than "boiling oil to catch copper coins"!

That's iron-made!

This time, a young man dressed in a prison student answered a question: "Because the iron box is hollow, is the density lower than water?"

Wang Xijue looked at the young man in surprise, remembered his appearance, and then nodded with a smile: "Density is equal to mass to remove volume. Mass can be understood as weight, and volume is only related to size, and it doesn't matter if it is solid and hollow. So the smaller the mass, the larger the volume, the greater the buoyancy..."

"Wouldn't that mean that even iron can build a ship?"

"Of course, as long as you create an iron ship with a density less than water under the guidance of this formula, you can naturally float on the water." Wang Dingjue smiled faintly and affirmed: "This is the role of science."

"Awesome! Awesome!"

Seeing the magic of science and understanding the calculation methods of science, the guests gradually listened to it, and all looked at Wang Xijue intently, listening to him continue to carry out vivid and interesting popular science.

Zhao Hao stood at the back door, looking through the curtain, looking at the scholar who was concentrating inside, revealing the comfort of his old mother.

~~

Happy study time is always so short.

Before he knew it, an hour passed. Wang Dingjue put down the prism in his hand and smiled politely to everyone: "The popular science in the morning has ended here, please leave in an orderly manner."

"Can you still watch it in the afternoon?" the guests asked with unsatisfactory thought.

"You can go to the concierge to register, and there are up to 30 people in a class." Wang Dingjue said, reminding everyone: "But in a short period of time, the experimental project will not change. So if you have seen it once, please try not to come again and leave the opportunity to more people."

After a pause, Wang Dingjue tempted everyone and said, "These are actually just small experiments in physics, and physics is just one of our own sciences."

Of course, he would not tell them that he had only studied by himself. Wang Wuyang's hand-written "Elementary Physics" has only a slight understanding of many places...

However, the master said that the most important thing about being a teacher is that he is obviously panicked, but he is as stable as an old dog on the surface, so that he can calm the scene.

The guests went out so disappointedly. They had seen so many magical experiments and knew why. Who wouldn't be itchy and want to have an in-depth understanding of physics?

"It seems that I have to go back and read the book "Geometry". Then someone said with a quick look: "Come again after you understand."

"Yes, this science is extraordinary. Not only can you do experiments, but you can also summarize the truth and what... Formulas, I think it is of great use."

"Go back and watch Geometry."

The guests returned to the street and took a look at the wooden sign "Don't say you are a disciple if you don't understand geometry", and their itchiness dissipated.

Wang Wuyang stood at the door, looked at the crowd that kept looking back, and smiled at the second junior brother beside him, "That's how people are. If you get it too easy, you won't cherish it."

"So the elder brother cherishes it very much." Hua Shuyang said with a humble smile. He always took pride in his apprenticeship than Wang Wuyang, and often made fun of the elder brother.

Wang Wuyang was indeed furious and was about to chase him away, but he heard a question with Qin Opera sound behind him:

"May I ask, why do you know how to understand?"
Chapter completed!