"It turns out that the earth is round, which is really incredible."

In the camp tent, Huang Naiming was telling Xu Ping about what he had seen and heard when he went abroad, and since he went out with the Shun army, Huang Naiming couldn't say a word about military matters, and Xu Ping certainly wouldn't ask for his opinion. Despite this, Xu Ping's friendly attitude still made Huang Naiming secretly surprised, the other party did not set up any obstacles for him in the army, Huang Naiming could walk around the barracks at will, and Xu Ping did not shy away from him when he held military meetings.

Once again, Huang Naiming couldn't help but ask the reason, and Xu Ping explained lightly: The south is already worried that the help to Dashun will not be used to fight against the northern captives, so he must try his best to eliminate such misunderstandings.

Although Huang Naiming couldn't say a word in the military, when it came to science, it was Xu Ping's turn to be the audience.

"I've heard fishermen say that the masts of the ships always show first, but I didn't think the earth would really be round." Huang Naiming personally told Xu Ping that he had traveled around the earth, Xu Ping frowned and thought for a long time: "Then why didn't we fall off this ball?" And why doesn't the water run out? ”

"Because there is a force, just as the suction of a magnet can attract steel, we are also sucked, and if there is no earth to hold it, everything in the world will fall into the heart of this earth." Huang Naiming briefly introduced some European scientific conjectures: "This force has a name, called gravity. ”

Xu Ping fell into contemplation again, shook his head after half a sound, and said, "But I can't feel this gravitational force, and the two things won't suck together by themselves." ”

"Because this gravitational force is much smaller than the magnetic force, a little mass will only have a little gravitational force," Huang Naiming has introduced the concept of mass to Xu Ping: "But the earth is too big, we are absorbed, and in the universe, this gravitational force is the decisive force, which makes our earth revolve around the sun." ”

Huang Naiming talked endlessly about what he saw at the London Observatory, which he was very interested in, but he couldn't find any good listeners when he returned to China, his father Huang Shi looked indifferent to science, and others either didn't believe it, or they were full of flattery, and there were few listeners like Xu Ping who both believed in themselves and were interested and questioned.

"Are all the stars in the sky spheres?"

"Yes, except for a few stars that revolve around the sun with our earth, most of them are very, very far away from us, and the sun burns all the time, probably all coal."

"How long can it burn? Can it be burned for thousands of years? ”

"Of course you can, General Xu, have you forgotten that I said how big the sun is, it's not strange that it can burn for so long."

The two young people asked and answered for a long time about astronomy, Huang Naiming told Xu Ping that Galileo observed that not only the earth has the moon as a moon, but other planets are surrounded by similar spheres, although gravity cannot be tested, but most of the scholars of the British Academy believe in its existence: "Mr. Hooke even put forward a theory that he believes that gravity is inversely proportional to distance, and this theory explains very well why the moon does not fall on our heads. And our earth has to revolve around the sun constantly, and it will not be eaten by it......" After explaining the definition of inverse and proportional to Xu Ping, Huang Naiming said with regret: "But Mr. Hooke's formula does not match the observed results, and we still can't prove the existence of gravity." ”

"yes, alas." Since Huang Naiming came to the camp, Xu Ping began to come into contact with science, and this explanation of nature made him refreshed, and he was a little stunned after hearing that the search for gravity had failed: "Ling Zun must like these things very much, right?" Otherwise, Brother Huang wouldn't have been allowed to go to Taixi to see this. ”

"Jia Yan, ......" Huang Naiming smiled bitterly and shook his head: "Jia Yan has no interest in this. ”

"How is it possible, isn't Ling Zun shocked when he hears that we live on a big ball? Isn't Ling Zun shocked to hear that we revolve around the sun and that the sun is ten thousand times larger than our earth? When Xu Ping first heard Huang Naiming talk about the universe, he couldn't sleep at night because of the vibration, and his mind was full of these new knowledge: "What about gravity? Is there no interest in such a magical thing at all? ”

"No," Huang Naiming thought that his father's thinking was too conservative, and when he excitedly talked about these things after returning to China and planned to teach his father a good lesson, Huang Shi showed a completely indifferent attitude, no questions, no refutations, and kept humming haha, Huang Naiming could only think that his father didn't believe it at all, and thought that it was so ridiculous that it didn't need to be discussed at all: "When I talked about Mr. Hooker's great conjecture, Jia Yan was not interested in listening to it, and after I talked for a while, he became impatient, He said that he guessed that gravity was inversely proportional to the square of distance, and that if the London Observatory had observed the orbit of the planet, it would have been confirmed. ”

"Ahh Xu Ping screamed, and he faintly felt in his heart that Qi Guogong was too open-mouthed, and he had no interest in understanding what he didn't know.

"That's it, Jia Yan didn't even ask me what is inverse and what is orbit, you see how long it took me to explain to you before you understood the meaning of these two words."

Xu Ping nodded, it sounded like Qi Guogong was indeed not interested in science at all, and he felt like Huang Naiming that this was a kind of incomprehensible numbness: "What is square?" ”

"The square is...... I may have mentioned this word, so Jia Yan used it. None of these words were created by me, and the National Book Company in Fujian Province has published several books, some on mathematics and some on geometry...... Geometry is...... These books are all translations of Taixi's works, and they are well translated, and these names are set, and Min and Guangdong are now widely used, but I don't know who the authors are...... Brother Xu knows that the status of our Chinese craftsmen is too low, I guess it should be a talented scholar translator, but I am afraid that others will say that he is not doing his job properly and is unwilling to devote himself to studying and taking the fame, so he did not leave his name, but it is a pity. ”

"Have you read these books?"

"I never read it, I recommended it several times, but Jiayan refused to read it."

"Ling Zun is indeed too busy."

"Well, there are other more interesting ones." Huang Naiming saw Xu Ping's energetic appearance, and he regretted his stubborn father even more: "Brother Xu knows the light." ”

"Light? Is it the light of the sun, the light of the candle? ”

"yes."

"Who wouldn't know that?"

"But have you ever thought about what light is?"

"What is light?"

Huang Naiming also introduced the latest research progress on light, as long as science is mentioned, the opposite Xu Ping, who had defeated himself, became like a primary school student, and as Huang Naiming expected, his new understanding of light once again shocked Xu Ping speechless for a long time.

"Now Britain has two speculations about light, one is the particle theory, the other is the wave theory, the former believes that light is a variety of colored particles, if General Xu is interested, I recommend you to find a craftsman to make a three-edged glass mirror, white sunlight can be broken down into seven colors, this is different colors of light particles, when they are mixed together, it is white light......"

"Shouldn't all the colors be black?"

On the contrary, the particle theory can explain the problem, and the green cloth is the light particles that only reflect green...... Reflection means...... That's right, red is the reflection of red particles, if all kinds of colors are mixed together, then any color of light particles are not reflected, it is black, and white, that is, all colors of light particles are reflected...... I don't know why some are reflected and some are not. ”

Xu Ping secretly made up his mind that he would find someone to do what Huang Naiming said tomorrow: "Doesn't that mean that light is particles?" ”

"But no light can push even the lightest paper, and the strong light can't push the weak light back, so there is also a saying that the wave theory...... Fluctuation means that light is like water waves......"

"It's really interesting, the light can be particles, it can be ripples." Xu Ping was fascinated by what he heard, and before he knew it, it was late at night, Huang Naiming was talking, and he couldn't help but look at the candlelight on the table, this usual thing seemed to suddenly become different now: "Isn't this Ling Zun interested?" ”

"Not interested," Huang Naiming sighed a little sadly: "Jia Yan has always been very curious about new things, but I don't know why I have no interest in science at all, whether this light is a particle or a ripple, Jia Yan didn't listen to a word when I said it," At that time, Huang Naiming said this strange thing in Huang Shi's ear over and over for several days, and repeatedly asked his father which statement he thought was more reasonable, Huang Shi didn't give advice, Huang Naiming still refused to give up, He wanted to use this topic as a breakthrough to arouse his father's attention to science, so he had to say that he was inclined to that kind of statement in the end, which made Huangshi quarrel so much: "Jia Yan finally dropped these words: 'I think light is both a particle and a wave, which is called wave-particle duality!'" Whether it exhibits wave or particle nature depends on your observation method! I have nothing more to say. ”

Xu Ping sighed lightly and didn't say anything, this answer gave Huang Naiming the feeling that his father was saying, "Don't talk about this topic again." Xu Ping felt the same way, at least on this issue, Huangshi's tall image had collapsed, appearing too stubborn and conservative and seriously lacking the ability to accept new knowledge. Perfect. Xu Ping commented in his heart.

"I also want to build an academy of sciences," after this period of getting along, Huang Naiming and Xu Ping have a very harmonious relationship, he said loudly to Xu Ping his longing: "This academy of sciences will be very large, ten times larger than the United Kingdom, it will have the best telescopes in the world, the most laboratories, I will do my best financial resources to support it, so that scholars can get the best treatment." ”

Xu Ping glanced at Huang Naiming deeply, who guessed Xu Ping's thoughts, and said with a smile: "Although Jia Yan is not interested in science, he is very supportive of my idea of building an academy of sciences, and he said that when the world is peaceful, he will allocate a lot of money to build it." ”

As soon as the word "Taiping" came out, Xu Ping and Huang Naiming were both touched, and the two fell into an awkward silence.

"Brother Xu," Huang Naiming said first: "It is still difficult to say what will happen in the world in the future, maybe our truce will stop for a long time." ”

"I hope so," Xu Ping has always had this expectation, he feels that this peace talks have eased the relationship between Ming and Shun a lot, and he also knows that King Shun has always had good intentions towards Qi Guogong, maybe this peace can be maintained for a generation, and when these people who respect each other pass away, the final unification war will happen, although the territory of the remnants of Ming seems to be very small now, but it is not uncommon for a small country to be divided for a long time during the change of dynasty: "I hope that Brother Huang's academy can be built." If I didn't have military affairs, it would be nice if I could be a scholar who studied this science, I thought I knew where I lived, but after listening to Brother Huang, I realized that I didn't know anything about my surroundings at all. ”

Huang Naiming smiled when he heard this: "It is impossible for Brother Xu to be without military affairs, as long as Shunting is still there, it is impossible for Brother Xu to be without military affairs in this life." ”

Xu Ping also smiled: "Maybe, but if the world is really peaceful, I will also persuade King Shun to establish this academy." After thinking about it, Xu Ping suddenly made up his mind and said to Huang Naiming: "Brother Huang, as long as you don't take the initiative to attack in the future, I will persuade King Shun not to provoke a war; But I just want to ask, if King Shun is willing to be honored as the king of Fujian and Guangdong, will Ling Zun be willing to condescend? ”

Huang Naiming shook his head lightly: "Brother Xu, why do you have to talk about this kind of hurtful and angry topic?" ”

"Brother Huang came to Beijing and didn't ask us to return Ming Jun," Huang Shi felt that Emperor Hongguang was an adult, and it would be troublesome if he was in Fujian, so in order to continue to weaken the royal authority, Huang Shi deliberately let the three-year-old prince continue to be a prisoner, even if it was an ignorant child, he refused to let him ascend the throne in the name of the emperor. Thinking of the conversation with Huang Shi before, now Xu Ping didn't believe it at all, and Qi Guogong still had the idea of reviving the Ming Room in his heart: "What is Ling Zun trying to do?" Isn't King Shun as good as Chongzhen? Doesn't Ling Zun want the world to be peaceful? ”

Huang Naiming talked about another topic, Xu Ping stopped continuing with interest, now Shunting is very important in the world, Huang Naiming knows that under normal circumstances, Fujian and Guangdong are not able to get it. However, according to intelligence, Shunting probably had tens of thousands of craftsmen under its direct control, who could produce some gunpowder and simple weapons, whether it was efficiency, organization or tools, it was very problematic, and the folk handicraft industry was even more scattered and weak, and Fujian and Guangdong had hundreds of thousands, maybe even millions of industrial workers, so Huang Naiming felt that in the end, Shunfang wanted to be separated and could not get it, even if Xu Ping was there, it was useless.

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