This time, it was nominally to help the Westerners in the empire celebrate Christmas, but in fact, Zhu Youxiao specially made up an academic seminar. After lunch, Zhu Youxiao summoned all the academicians of the entire Academy of Sciences to the lunch, and he also specially selected a group of students from various colleges to participate in the academic seminar. And, of course, a large number of translators.

"Mr. Galileo, are you still comfortable living in the Empire?" Zhu Youxiao asked.

"Thank you for Your Majesty's concern, and the minister is very satisfied." Galileo replied respectfully.

"I have had the pleasure of reading his writings, and I have found that he has put forward in his writings the principle of inertia and new concepts such as force and acceleration, so can I understand that all objects always maintain a state of uniform linear motion or a state of rest, unless an external force acting on them forces it to change this state." Zhu Youxiao deliberately asked.

Galileo thought for a moment, and then said in surprise: "What Your Majesty said is extremely true, Your Majesty's summary is more incisive and more appropriate than the minister's summary. ”

"All this is just a judgment made on the basis of Mr. Theory, I am not a professional scholar, and this law of motion needs to be continued by Mr. to continue to demonstrate." Zhu Youxiao said with a smile.

This is Newton's first law of motion, although Zhu Youxiao can easily recite it when he reads, but now he has almost forgotten it, he also recalled it after reading Galileo's book, not to mention that Newton's first law was also developed on the basis of Galileo's theory, and Zhu Youxiao understood it with a little Galileo.

"Your Majesty is too modest, if Your Majesty wants to learn, the minister will definitely teach you." Galileo said.

"Sir is polite, I am entangled in state affairs, I am really powerless, I only hope that if I don't understand something, I hope that Mr. will give me advice." Zhu Youxiao said happily.

"Your Majesty can come to the ministers at any time to discuss academic issues together." Galileo nodded.

Today, Zhu Youxiao is like a courtesan, he shuttles between the big names of this era, and always unintentionally gives them a hint, in fact, he only knows this hint. But his hints are undoubtedly correct and have been proven by later generations.

Zhu Youxiao came to Kepler's side this time, Kepler has always been very grateful for Zhu Youxiao's support, and after coming to Daming, his family's food and clothing problem was successfully solved.

"Mr. Kepler, I have had the pleasure of reading his writings, and I agree with you in proposing the three laws of astronomy. But I have always had a few questions in my mind, that is, why does the earth revolve around the sun? Is it because there is a force between the earth and the sun, like gravity, that makes the earth always revolve around the sun and cannot be separated from the sun? Zhu Youxiao asked.

Kepler's law provides a basically complete and correct description of the motion of planets around the sun, which solves a basic problem in astronomy. But Kepler failed to explain why it followed its orbital schedule. Zhu Youxiao just wanted to guide Capt to think in this direction.

"Your Majesty said this question, in fact, the minister has been thinking about it, listening to His Majesty's words today, the minister also feels that there should be a force between the sun and the earth." Cape nodded his head.

"This is just my conjecture, as for how to prove it, it is up to you to do it." Zhu Youxiao said.

"The minister understands, the minister will work hard." Capturt said politely.

"Well, I believe you will succeed, and you can always reach me if you need anything." Zhu Youxiao said.

……

"Wang Juzheng, how is the steam engine doing?" Zhu Youxiao asked.

"The first prototype machine has been made, but it is too small to be put into practical use, and we are currently working on a vacuum steam engine that can be used to drain water from the mine." Wang Zheng said.

"Lifting water with heat is a good research direction for steam engines." Zhu Youxiao encouraged.

"Your Majesty, the Machinery Bureau has made improvements to the Empire's Tiger Squat Cannon, and after our tests, it is stronger than the Tiger Squat Cannon in terms of range and power." Wang Zheng said.

"What is the weakness of the Tiger Squat Cannon?" Zhu Youxiao asked.

"Compared with the Tiger Squat Cannon, the cost is more expensive, and the weight is about one and a half times heavier than the original Tiger Squat Cannon, and the Machinery Bureau fixes the Tiger Squat Gun on a gun carriage with wheels, which makes transportation more convenient, and there is no need to temporarily fix it before the war." Wang Zheng explained.

"Yes, I'll see it in the next year." Zhu Youxiao said.

"No." Wang Zheng said respectfully.

Since the establishment of the Machinery Bureau, tens of thousands of taels have been spent, Wang Zheng feels that he can't pay a difference if he doesn't get some results, and this improved tiger squat cannon is something he has been studying day and night.

Zhu Youxiao heard that in the Battle of Shenyang, Houjin relied on cotton armor and shield chariots to break through the imperial infantry phalanx, although the infantry phalanx used bird guns, but he knew that in fact, even if he used flintlock guns, the effect would not be much stronger than bird guns. Zhu Youxiao has been thinking about how to restrain Hou Jin's new combat methods, but he is not a professional and has always had no clue, and now Wang Zheng's Machinery Bureau has created an improved Tiger Squat Cannon, which probably means that the empire has found a new way.

In this academic seminar, the most fierce quarrel is still the dispute between Chinese and Western medicine. As a person from later generations, Zhu Youxiao has seen the magic of Chinese medicine with his own eyes and experienced the practicality of Western medicine.

"I think that whether it is Chinese medicine or Western medicine, what can cure patients is good medical skills. I think that you should learn from Wu Youxing and Chen Shigong to become a doctor who has studied both Chinese and Western medicine, and learning from each other's strengths is the real royal way. In the end, the minister still looked at the result. Zhu Youxiao said.

"No." Everyone bowed down and replied.

"Wu Aiqing, how is your plague theory?" Zhu Youxiao asked. Wu Youxing's plague research is what Zhu Youxiao is most concerned about, and Zhu Youxiao is afraid that the plague will suddenly break out one day.

"Back to Your Majesty, it's just the beginning now, and I have a little clue." Wu Youxing bowed and replied.

"Well, the study of the plague is a top priority, if you need my help, you must tell me in advance, this matter is what I am most concerned about." Zhu Youxiao said.

"The minister must do his best to achieve results as soon as possible." Wu Youxing said softly.

"Next March will be the first Apocalypse Award, you and Deng Yuhan discovered the cell together, there should be a prize next year, my opinion is that the title will be given to you, and the bonus will be given to Deng Yuhan. What do you think? Deng Yuhan had already agreed. Zhu Youxiao asked.

"It's all at Your Majesty's command." Wu Youxing said.

(End of chapter)