Diffuse was almost excited, and even the Chinese that was already fluent was a little stammering, "Holy King, the little county lord is a good seedling, my wife Sima Ni and I are willing to pass on all our knowledge to the little county lord....."
Nassin on the side.
Jabalitaem kept spitting on his old friend in his heart, don't pay attention to it, don't pay attention to it, how can you be so shameless, even if your wife is also a good mathman, but you can't be so shameless in order to rob your apprentice, right?
Originally Nashin.
Jabalitaem also had the idea of accepting Li Qiurui's little apprentice, but he just hesitated, the apprentice was about to be someone else's, which was unacceptable, "The king of kings, I am also willing to pass on all my knowledge to the little county lord...."
Lu Cai on the side saw the actions of the two old friends, and he didn't care if Li Qiurui was a daughter, such a demon, or a child of the royal family, if he didn't rob it, he would be a fool, "Your Majesty, the old man is also willing to give it to him...."
It can be valued by the three top scientific giants in the world, This made Li Lu even more satisfied with his daughter, he looked at his daughter, "Little white cat, why don't you give your three masters a gift?"
”These three scientists have their own strengths, Lu is a generalist, he knows a lot, diffuse difference in addition to astronomy in mathematics is very deep, and Nasin.
Jabalitaem is both an astronomer and a physicist......
Li Lu's words made the three of them happy, with this little apprentice, if they want to do some research, it will be easier to see Li Lu asking for funds, right?"
Three masters, I will hold a formal apprenticeship ceremony for you and the little girl..."
Chinese people have paid attention to respecting teachers since ancient times, and Li Lu is no exception.The wish was granted, and the diffuse cha rubbed his hands and asked Li Lu, "Holy King, can you give me the original mathematics that the little county lord said for me to observe and observe.....
Li Lu stood up and walked to the bookcase, took out the "Mathematics Original" that he copied a few years ago, and then handed them the three, these three are all mathematics masters, after seeing Li Lu's plagiarized "Mathematics Original", he quickly indulged in it, "Mr.
Daogu's Great Yan Qiu One Technique and Positive and Negative Prescription Techniques are simply too exquisite.....
When Lu Cai saw Qin Jiushao's one-time congruence group solution and the numerical solution of arbitrary higher-order equations recorded by Li Lu, he couldn't help but sigh, "Why don't you see such a number in the annals of history?"
Those rotten Confucians are really hateful..... business is often positive, real is often negative, from often positive, beneficial is often negative, Mr.
Daogu summed it up well...."
Li Lu on the side listened to Lu Cai's words, but he was secretly laughing in his heart, "Qin Jiushao's name, if you know, it will be strange, hahaha......
"Diffuse and Naxin.
Jabalitaem, on the other hand, was fascinated by the method of solving multivariate equations in mathematics, and "Chinese mathematics is really broad and profound.....
Nashin.
Jabalitaem sighed, he rubbed his somewhat sour eyes, and looked at Hou Li Lu, "King of kings, can you let the craftsman of the bookstore publish this book, we can ..... too" He is very smart, and he knows that with printing, he can save a lot of trouble, so he will not be stupid to copy books."
This can have...."
For such a request, Li Lu naturally allowed it, and Lu Cai and the others put down this mathematical book and returned to the question, "Your Majesty, there is a big problem in our heliocentrism that we can't solve, that is, we all think that the earth is rotating, but we can't come up with accurate evidence to ......"
Lu Cai talked about their problem."
Yes, if we can't prove the rotation of the earth, then our heliocentrism is very flawed..."
Jabalitaem followed."
If it can't be confirmed by conclusive evidence, it can only be a hypothesis....."
Diffuse also said.In the end, the three of them saluted Li Lu together, "Please help us for the sake of truth..."
This is a question, Li Lu groaned, but this question is not difficult for him, because the high school physics textbooks of later generations clearly wrote that the experiment of the earth's rotation is very simple, that is, the famous "Foucault pendulum", when Li Lu was pondering, several people, including Li Qiurui, looked at Li Lu progressively, and they did not dare to make a sound, lest they spoil Li Lu's train of thought.Li Lu suddenly stood up and said to them, "You guys come with me....."
After saying that, Li Lu picked up his daughter, and then led the way in front of his head, and came to a small room, and everyone saw that the room was full of strange things, Li Lu took a strange device, this device is very simple, it is a small ball hanging with a rope on a horizontal iron rod, "I call this device a single pendulum ....."
Li Lu fiddled with the pendulum, only to see the ball swinging in the air....."
Several, did you find anything?"
Li Lu asked with a smile, only to see Lu Cai and the three of them were meditating hard.
Jabalitaem fiddled with the sheet many times, and after a long time, the physicist suddenly patted his head, "I understand, I understand..." ”"It's not easy, you see...."
Narsin.
Jabalitaem waited for the pendulum to stop, and then fiddled with the pendulum again, "Look, is it that they have been moving back and forth for about the same time?"
”"It's really ....."
After Lu Cai and Diffuse Difference observed carefully, they also discovered this phenomenon, "Nashin is right, I call this the isochronism of the single pendulum .....""
The isochronism of a single pendulum??
King of kings, you summed it up so well....."
Nashin.
"I think this principle is very useful, and we can use it as a timekeeping instrument.....
As soon as his words fell, Li Lu gave him an appreciative look, you must know that the principle of the pendulum clock of the first precision timekeeping instrument in real history is the isochronism of this single pendulum, and this Persian is not simple."
What is the application of a single pendulum, we'll talk about it later...."
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Li Lu smiled, and then looked at the three of them, "Since the earth is going to rotate, then...."
Li Lu took a wooden ball, and then drew a line on the wooden ball with a charcoal pen, "This line, I call it the equator..... as long as the earth is still rotating, then in other places other than the equator, the vibration surface of the single pendulum will definitely rotate, do you agree with me?"
”The three of them exchanged glances and expressed their approval, and Li Lu continued, "Then we can use this to verify whether the earth is rotating ......"
Lu Cai and the others said that you are really a genius, and then they assisted Li Lu to complete an experiment, they used a very heavy hammer to hang on a pendulum, the pendulum was a ten-pound brass ball, and the cycloidal was a thin wire.Then tie another wire to the end to fix it, wait until the pendulum is completely still, and burn the wire with a fire sickle to let the pendulum swing freely.According to the prediction of Li Lu and the three of them, when the earth rotates, the pendulum will swing in the same plane of space.But to their disappointment, although they saw the plane swing of the pendulum, it was very obvious, "Have you seen it?"
The old man saw it, but it was too inconspicuous?
”"Yes, in this case, those people will open their eyes and talk nonsense, and they will pretend not to see such a small swing....""
The principle should be correct, the problem should be in the accuracy...."
Listening to the discussion of the three of them, Li Lu couldn't help but sigh, he really couldn't underestimate the ancients, "You are right, if you want to study the law of rotation of the swing plane, you must improve the experimental conditions and improve the accuracy of the experiment....."
Lu Cai and the three of them also gave Li Lu a thumbs up, and after the four of them discussed, they decided to conduct a public experiment in the "Pantheon" built to enshrine those great people in the tallest single-story building in the entire Broken Leaf.In order to improve the accuracy of the experiment, after many experiments by four people, they chose a pendulum with a diameter of one foot and a weight of more than 50 catties, and the pendulum sound grew to 15 zhang, and then hung this huge single pendulum in the center of the dome of the Panthéon, which was obviously in the style of ancient Rome, so that it could swing freely in any direction.Because of the large inertia and momentum of the pendulum they chose this time, it is basically not affected by the rotation of the earth and oscillates on its own, and the oscillation time is very long.Under the pendulum, there is a sand table with a diameter of two zhang and a starting bolt.If the earth does not rotate, the oscillating surface of the pendulum will remain the same; If the earth is constantly rotating, the oscillating surface of the pendulum will rotate in the eyes of the people on the earth.The news that Li Lu and Lu Cai were going to conduct experiments to prove the rotation of the earth soon spread throughout the broken leaves, and those who stubbornly opposed the "heliocentric theory" expressed their willingness to go and watch, "How can the earth, as the center of the universe, rotate?"
”"That's it, that's it, I'll go together and see them make a fool of themselves....""
How did this king of ours fall for the poison of Lu Cai and the others?
Does he also think that the earth is rotating?
”All kinds of rhetoric are endless.Because Li Lu has a very high reputation in Broken Leaves, whether it is a scholar or an ordinary person, when they learned that Li Lu was going to conduct an experiment, they all expressed their support for Li Lu with their feet, and on the day of the experiment, the Panthéon was almost crowded by the surging crowd."
Your Majesty, Ptolemy cannot be wrong...."
After seeing Li Lu, Luo Luo said anxiously, "For hundreds of years, countless sages have also proved this, and the heliocentric theory is not true at all....""
Yes, Your Majesty, you are also a master of mathematics, you can calculate it, and you will know that heliocentrism is unreliable...""
Your Highness, it is impossible for the earth to rotate...."
This is Li Chunfeng.These people are the absolute main force that resolutely opposes heliocentrism, and they say that it is impossible for the earth to rotate, and Li Chunfeng is the most resolute in this, the reason is very simple, he is revising the "Imperial Calendar", according to his observations, the earth is stationary and easy to log?
Regarding their doubts, Li Lu only smiled mysteriously, noncommittal, because he knew that his experiment was very promising and would be remembered as "Li Lu's pendulum experiment" many years later, he was afraid of a ball?