Although some things are public information, those things have been sorted out by others after all.

What Lu Zhou wants to see is Lyman Spitzer's original idea of the stellar simulator at the beginning of the design of the stellar.

At the same time, it is also a theoretical model from the perspective of a pure physicist.

"Lyman Spitzer's manuscript?" Edward Witten touched his chin and thought for a moment, "I really haven't paid much attention to this research, but I remember that he donated the manuscript to the Institute for Advanced Study at the end of the millennium, and these things were transferred to the Flint Library for preservation at the beginning of the millennium. If you're interested, you should find it in the library of the Flintstone Library. ”

Lu Zhou: "Is it in the Flintstone Library?" Thank you. ”

"You're welcome," Witten smiled and continued, "Actually, if you're interested in stellarics, why don't you consider visiting a relevant research institution?" No one in Princeton is working on this thing anymore, but Stanford and MIT, as well as Caltech, are doing more research on this thing. ”

Lu Zhou: "I will consider it if necessary, but before that, I have to determine my research direction." ”

The concept of controlled nuclear fusion is so big that although the general description is only five words, the name of the research project involved is no less than five pages.

In a sense, one of the reasons Lu Zhou wanted to borrow Lyman Spitzer's manuscript was because he wanted to be inspired by it.

After listening to Lu Zhou's words, Witten took a sip of coffee and said with a smile: "I wish you can find what you are looking for." ”

"Lend you good words."

After smiling and leaving this sentence, Lu Zhou said goodbye to Witten, and walked towards the outside of the Institute for Advanced Study without stopping for a moment.

……

There is a group of scholars in academia who are engaged in rigorous research while still maintaining their imagination.

The first thought of something that seems unthinkable to ordinary people is not to be inclined to prove the impossibility of it from a professional point of view, but to try to give real meaning to fantasy from a scientific point of view.

Lyman Spitzer is such a person.

In addition to him, Freeman Dyson, who proposed the concept of the Dyson sphere, and Tsiolkovsky, who proposed the concept of the space elevator, can be included in this list.

Lyman Spitzer is clearly not well-known compared to the latter two, but no one can ignore his influence in physics, especially astrophysics.

Because it was he who first proposed to put a telescope into space to eliminate the occlusion effect of the Earth's atmosphere, which later led to the creation of the "Hubble" space telescope.

In his honor, the Spitzer Space Telescope (SST) telescope, the last space telescope of the major orbital observatory program, is named after him.

After saying goodbye to Witten, Lu Zhou went to the library area of the Flintstone Library and found the librarian here.

The person in charge of the collection is an old man who seems to have a somewhat rigid and eccentric temperament.

It's not uncommon to see all sorts of weirdos in Princeton, but it's rare for a mystic to wear a nightgown like this as a work uniform in the library.

Especially the cloudy eyes, people can't help but wonder if he is suffering from Alzheimer's disease, and whether he can still hear what others say.

However, to Lu Zhou's surprise, when the old man listened to his intentions, not only did he not have any demented reaction, but he even quickly came to a two-person high bookshelf and took down a thick notebook with cowhide on the cover with the help of a ladder.

Returning to the wooden counter, the old man grimaced and handed the notebook in his hand to Lu Zhou.

"Here's what you want."

"Thank you."

Lu Zhou thanked him and reached out to pick up the manuscript.

However, the old man did not grant him his wish, as if he were fishing, and the outstretched hand instantly retracted at an exaggerated speed.

Lu Zhou: ???

With an indifferent face, the old man's dry hand came back to him.

"This is the wealth of civilization, please keep it safe."

It seems that he was just going to give himself a word of advice.

However, at this time, Lu Zhou noticed that the old man's hand holding the notebook was shaking all the time, as if he was waiting for an opportunity to move.

"I see...... Can you give it to me now? Looking at the old man in front of him with a strange expression, Lu Zhou didn't reach out to pick up the notebook.

It always feels like an old man is deliberately teasing him.

Seeing that Lu Zhou was not fooled, a trace of disappointment flashed in the old man's eyes, he coughed lightly, and continued to say with a straight face.

"Absolutely...... But before that, you have to swear what it looks like when you borrow it, and what it looks like when you return it. ”

Lu Zhou raised three fingers.

"I swear ......"

"You don't swear to me," the old man took out a Bible he bought from nowhere and looked at Lu Zhou seriously, "You have to swear to it." ”

Looking at the Bible, Lu Zhou's face was full of helplessness.

What's the use of having an atheist swear by this thing?

It would be better to give him a copy of Newton's "Mathematical Principles of Natural Philosophy" or Einstein's "Unified Field Theory", which can be a little more solemn.

However, in order to save time, Lu Zhou didn't talk so much nonsense, and still put his hand on the cross of the Bible as he said, and said in an honest tone.

"I promise it will look like when you borrow it, and it will still look when you come back."

Although he was a little dissatisfied with Lu Zhou's lack of solemnity, after he had completed this strange ceremony, the old man nodded reluctantly and handed the manuscript to him.

"I hope you remember your promise."

"I will."

Without stopping for a moment, after taking the manuscript, Lu Zhou immediately walked to the reading room next to him......

……

Because time has given it the attributes of a cultural relic, even if he borrows the book from the flint library, Lu Zhou cannot really take the manuscript out of the library, and can only read it in the reading room in the library area.

If it is a document that is more than 100 years old, you even have to pass the relevant qualification assessment and wear special gloves before borrowing.

However, this note is relatively "new", only more than 60 years old.

Spreading it out on the table, Lu Zhou studied it carefully from the first page.

It is not easy to fully comprehend the contents, and Lyman Spitzer's notes are as wild as his imagination, scribbled and interspersed with sketches of unknown meaning.

I don't know what kind of mood he was in, he wrote that will and donated all his manuscripts to the Institute for Advanced Study in Princeton.

Lu Zhou felt that if it was himself, he would definitely not allow such an "unclear" thing to remain in the world......

It took Lu Zhou an afternoon to see it from beginning to end.

Although many places are difficult to understand, after reading it, he still feels that he has benefited a lot.

Especially for the pre-technology to complete the final vision of the stellar, Lehmann Spitzer's judgment is basically consistent with his own conclusions.

“…… It's hard to imagine that this turned out to be something sixty years ago. Closing the old manuscript, Lu Zhou couldn't help but sigh softly and gave his own evaluation.

Even now, if the ideas in this note and the design concept of the stellar simulator are refined, a paper of great academic value can still be obtained.

Of course, it's been 60 years, and someone must have done it.

Putting the manuscript aside and looking at the contents organized in the notebook, Lu Zhou fell into thought.

Controlled nuclear fusion is a huge project, both in its own sense and in the vast prospects behind it, which is enough to arouse his interest.

The problem, however, is that he needs to choose a suitable entry point.

Is it a superconducting material that is closer to room temperature?

Or, from a mathematical point of view, try to study the "laws of plasma motion in a stellar"?

The first two are at the application level, and the latter is at the theoretical level, and no matter which one is not easy.

The latter, in particular, involves the study of rather complex plasma turbulence phenomena, which is arguably the most difficult and complex of the many research directions on the Navier-Stokes equation.

Until now, what people have been able to do with plasma is only "diagnosis", not "measurement".

However, once this problem is effectively solved, it will not only promote the progress of nuclear fusion engineering, but also be very enlightening for the study of the Navier-Stokes equation......

There was silence for about ten minutes.

The corners of his mouth suddenly hooked up a smile, Lu Zhou raised his pen and drew a circle on the line "The law of plasma motion in the stellarizer".

Closing the notebook in his hand, he took the manuscript and his belongings and stood up from his chair.

Sure enough, there are still more challenging puzzles, which are more suitable for you.

Since solving Goldbach's conjecture, there has never been a question that could not be answered so much that has made his heart flutter......