Zong Shu talked to Zhuzhu about the thickness of the lines, which are not profound, because everyone usually deals with light and shadow.

It's just that in the process of painting, everyone blindly follows the path of their predecessors, and they don't think of innovation at all.

This kind of painting technique is just a way to express things that people don't usually notice, but it has such a magical effect.

"Your Royal Highness the Prince, there are many phenomena in life, but we just haven't explored them. Nowadays, many people talk about Gewu, but in fact, there is no real Gewu. For example, if an orange falls, what do you think of? ”

Zong Shu originally wanted to take apples as an example, but apples did not exist at this time, and they were only introduced and planted from Europe after the Qing Dynasty.

"When oranges fall, they break." Li Shaoyan spoke first.

"When you see an orange falling, it rolls because it's round. With this realization, there will be wheels. ”

Zong Shu said: "Brother Shaoyan said that oranges will break. Next, it will rot, and the rot will act as a fertilizer, which is the circular economy. ”

Rot? Rot? A light suddenly flashed in Zong Shu's mind.

Oranges, rotten! By the way, Zong Shu finally remembered three words: penicillin!

I remember when I was in school, my chemistry teacher told me a story about how a seafarer was injured during Columbus's voyage and there was no medicine to treat him.

Seeing that the soldier was about to die, he found a few oranges that had rotted and caused mildew, and with the idea of a dead horse being a live horse doctor, he wiped the wound with oranges.

In the end, the soldier's wound was miraculously healed.

In the absence of antibiotics, infections with even small skin breaks can lead to more than 10 percent mortality.

The skin of the moldy orange is rich in penicillin.

Penicillin is effective in killing many bacteria, but it does not harm the body's normal cells.

This kind of thing is not only useful on the battlefield, but also even more useful to ordinary people.

At this time, people's disinfection methods were very primitive, basically using wine or some other mineral powder.

The purity of the wine of the Great Song Dynasty is not high enough, and it is far from the alcohol of later generations.

Even the presence of alcohol does not necessarily guarantee that the wound will not become infected.

In ancient times, women gave birth to children, and the mortality rate was even higher, reaching more than 30 percent.

With penicillin, these diseases can be cured.

There are also sores in Zongze's history, if there is penicillin, it will not be poisoned to death.

With penicillin, coupled with iodophor, Zong Ze's life will definitely be saved.

When the time comes, selling these two drugs will definitely be more profitable than Nuan Ge!

After all, the warm pavilion is limited to the north of the Yangtze River, and it is not needed in the south. And penicillin and iodophor can be used in both the north and the south.

"Brother Shaoyan, thank you, thank you, you made me think of something good." Zong Shu was very excited.

Yingluo immediately asked what was a good thing, and the good thing that Zong Shu thought of was probably good.

It hasn't been made yet, and of course Zong Shu can't tell her.

"Your Highness, why does the orange fall and not fly up?" Zong Shu asked.

"This is natural, there are clouds in ancient books: Fu Hongmeng divides, yin and yang are the beginning, and those who float lightly are the sky, and their quality and yang are also; Heavy turbidity under the condensation is the earth, and its quality is also yin. ”

The prince shook his head and dropped his book bag, this ancient man was really stupid when he read books, no matter what he explained, he didn't go to the field to observe, the first thing he thought of was to find evidence from ancient books.

This problem has to be changed!

"Your Highness, the ancient book is a fart! We know so little about the world that everything is explained in terms of yin and yang. Ben is not wrong, but we don't delve into the subtleties, so we fall behind, and if we fall behind, we will be beaten! ”

Zong Shu became more and more excited, and finally slapped the table.

If you fall behind, you will be beaten? Could it be that something is wrong with our theory? Are we just staying on the surface of yin and yang?

Zhao Huan couldn't think about it, Zong Shu was deviant.

"Your Highness, the reason why oranges are falling down is because the world we live in has a gravitational pull. The greater the mass of an object, the stronger the gravitational pull. Therefore, nothing in the world can escape the gravitational pull of the earth. Unless, now there is no unless. ”

Zong Shu thought of a rocket, as long as it reaches a certain speed, it can also get rid of the earth's gravity and fly into space.

Speaking of this, for the crown prince, it is too distant and illusory.

"Heaven is above, earth is below, and we naturally want to be on earth." Zhao Huan still didn't understand.

"Your Highness, remember the magnet? The magnet attracts the magnetic force of the arrow, which is also a type of gravitational force. ”

Of course, the people in the house knew about the magnet, and it was Zong Shu who moved the magnet of Banzai Mountain and sucked the arrow of the little prince of the Jin Kingdom crookedly.

"Your Highness, the world we live in, called the Earth, is equivalent to a huge magnet, except that it produces magnetic force not only on iron, but also on any other object."

Zong Shu felt that he couldn't talk anymore. immediately changed the topic: "Your Highness, today I want to give you a question to think about: hearing is false, seeing is believing, is it right?" ”

Hearing is false, seeing is believing, this is an ancient adage for thousands of years, is there anything wrong?

Zhao Huan immediately said that hearing is false, seeing is believing, from the old general Zhao Chongguo when Emperor Xuan of the Han Dynasty.

Emperor Xuan of the Han Dynasty asked Zhao Chongguo how many Jiang people there were on the northwest border, and Zhao Chongguo said that he would go to the front line to see it in person.

Hearing this, Zong Shu felt that educating the prince was really a long way to go.

Zong Shu took a pen from the table that he had never used before, filled it with water, and took another brush and put it in.

"Let's see, is this brush bent?" Zong Shu asked.

Everyone saw that the brush was divided into two parts by the water, and the underwater part was obviously bent upward.

Zong Shu picked up the brush from the water and asked, "Look now, is the brush bent?" Good, not a little bent. ”

At this moment, everyone was stunned, yes, it was obviously bent, and it was straight again!

Seeing is not necessarily believing.

"Just now I talked about painting techniques and told you about the problem of light. What I want to tell you is that light travels in the air, which is different from traveling in water. The moment the light enters the water from the sky, the direction of propagation changes, which is the refraction of light. ”

Zong Shu patiently explained.

"You must remember that I was on the school grounds, igniting wood with ice lumps. Sunlight enters the ice from the sky, and the light is also refracted by the light, and the shape I made, called a convex lens, refracted all the sunlight to a point, and all the heat of the sunlight gathered together to draw the wood. ”

Zong Shu held up another example.

Everyone finally understands the refraction of light.

"Your Highness, don't think that these are useless things. It is the understanding of the refraction of light that gives rise to convex lenses. With this, it is possible to concentrate the sun's rays. Your Highness, if you put a convex lens on the roof, you can make the water hot. ”

Zong Shu said and immediately thought of solar energy, haha, there will be a hot bath to take in the future!

Zhao Huan is not stupid, following Zong Shu's train of thought, he can use the sunlight to heat up the water, wouldn't he save a lot of charcoal and firewood?

Of course, Zhao Huan didn't know that the cost of making glass convex lenses was too high, and how could ordinary people afford to use them on the roof?

Zong Shu's purpose in analyzing these phenomena was to make the prince realize that if a phenomenon was clarified and a principle was understood, new inventions would appear.

"Your Highness, there is a lot of knowledge in the world, which is not found in ancient books, and the ancients are not necessarily right. If we go to ancient books everywhere to find evidence, and see if the ancients said that they didn't say it, then we still develop a fart?! ”

"Your Highness, please believe that we are standing on the shoulders of our predecessors, and we must be stronger than the ancients! As the saying goes, the back waves of the Yangtze River push the front waves, and the front waves die on the beach. ”

Zong Shu said: "Your Highness, you have to have this kind of self-confidence. Let's work together to be the back wave of the Great Song Dynasty. ”