Kapitsa was overjoyed and Chen Muwu sighed.
Now he has finally forced himself to a dead end, allowing himself to experience once again what a dead line is and the primary productive force after several years.
Chen Muwu didn't need to worry too much about theoretical research.
With him and without him, there is basically not much difference.
He was basically unable to help with Ramsey's mathematics paper.
As for the quantum mechanics lecture notes, Dirac, who has already received his doctorate, is now working at full capacity. He is also assisted by Oppenheimer and von Neumann, and recently a new Heisenberg has been added.
With the level of IQ of these individuals, if they could not even write a lecture on quantum mechanics, Chen Muwu himself would not believe it.
But when it comes to the quantum mechanics lecture notes they compiled, it is hard for Chen Muwu to say whether students who will use this book to take classes or study on their own will be able to understand it in the future.
Although Einstein was the discoverer of the theory of relativity, the textbooks used by German physics students today still contain "Pauli's works".
However, Fowler instructed Dirac to write this lecture from the very beginning. He should have foreseen how his student would write a book.
Since he is not afraid, then Chen Muwu is even less afraid.
Anyway, the name on the author column of this book is very luxurious, and he is not a disgrace.
Before leaving, Chen Muwu left a piece of advice to the handout writing team.
He asked them to go to Trinity College from time to time to chat with Thomson, the dean, and learn from him. After all, many of the physics and mathematics textbooks used by Cambridge students were written by him.
Among these people, only von Neumann would occasionally come to chat with Chen Muwu and discuss some issues.
The paper on determinability co-written by the two of them has been submitted to the "Transactions of the Natural Sciences" of the Royal Society of London.
Although the editors in the editorial department don't know why Chen Muwu changed his previous way in the past year or two, he no longer works alone, but publishes articles with others every day.
But as long as there is a Chinese name in the author column that obviously does not conform to English spelling rules, and the content of the paper is roughly related to science, whether it is theory or experiment, they will arrange for publication as soon as possible.
Previously, the editorial board's trust in Chen Muwu was limited to physics and astronomy.
The editorial staff couldn't make up their minds about the paper on the incompleteness principle, so they could only send letters to several well-known mathematicians in the UK, asking them to help review the manuscript.
What was the subsequent result? Isn't it true that Dr. Chen's paper was correct, and the leader in the mathematics community was devastated?
The distrust in Dr. Chen’s thesis is not at odds with Dr. Chen, but with themselves.
You waste time and spend a review fee, but in the end you get a paper that is accurate from the beginning. Why bother?
Therefore, after the mathematics paper co-written by Chen Muwu and von Neumann reached the editorial office, they no longer enjoyed the treatment of the previous mathematics paper. Instead, they directly proofread and typeset it, intending to publish it in the latest issue, which is when Chen Muwu left the UK. In the issue of "Hui Bao" that went to Su Lian.
Von Neumann now comes to see Chen Muwu, and the issue to be discussed is of course no longer the matter of determinability.
He was very interested in the Chen Ji that Chen Muwu created to verify this problem.
How can we turn this virtual machine that can only be imagined by the brain into real life?
Every time von Neumann raised various related questions, Chen Muwu could only respond with a few vague words.
Although he knows the answer, he can't tell the answer?
Vacuum tubes, transistors, chips...
Regardless of how surprised the other party was after hearing these topics, even if it took several days and nights to tell Von Neumann this matter from beginning to end, he would still be able to understand it as soon as he heard it. .
But Chen Muwu felt that even if they were given ten or even twenty years, they would not be able to produce any tangible results.
This thing should take another twenty or thirty years. After returning to China, it would not be too late to go to Beijing to ask for a place called Zhongguan Village, build some buildings and research institutes, and conduct research on it.
If von Neumann is willing to follow him back to China by then, it is estimated that even if he does as the Romans do and takes a Chinese name, most of the people in the institute will be willing to call him by his nickname, Lao Feng, based on their strengths.
After sending a telegram back to the Crown Prince of Sweden, saying that he agreed to accompany him on his visit to China, and roughly arranging the theoretical work, all that was waiting for Chen Muwu was the proton source at Cockcroft. this matter.
If a motor is like a cannon, then the particle source that produces protons is equivalent to the cannonball that is loaded into it.
After having the "cannonball", it can be accelerated through the long "barrel" and finally bombard the target.
Is this particle accelerator not a kind of electromagnetic gun?
It's just that the cannonballs are a little smaller than conventional ones.
This Van de Graaff generator can produce a large positive voltage.
If the DC power supply that supplies power to the conveyor belt at the lowest end is connected reversely and the conveyor belt is sent with negative charges, a negative high voltage can be produced based on the same principle.
But for now, negative high voltage is of no use. Although it can accelerate negatively charged particles, there is only one type of negatively charged particle commonly found in the laboratory, and that is electrons.
The feeling of bombarding target nuclei with electrons accelerated to high speed is funnier than carrying a toy gun loaded with BB bullets on the battlefield.
As for how to prepare a large number of protons. ,
There is only one electron difference between a proton and a hydrogen atom.
Hydrogen atoms are the only kind of atoms that make up hydrogen gas, which can be easily produced in the laboratory or industry.
Therefore, if you want to make a proton source, the most troublesome step is how to separate the nuclei of hydrogen atoms from hydrogen gas.
It is definitely not feasible to cut it directly with a knife. He is not Academician Hou Xiaoming of Beijing University of Science and Technology. He does not have such exquisite knife skills to cut the magnetic monopole directly from the magnet.
But there is no need to rely on knife skills to strip electrons from hydrogen atoms.
It only needs to inject hydrogen gas into the vacuum environment, and then use an electron beam with a certain energy to collide with it to ionize the hydrogen molecules into protons.
Then from this plasma composed of hydrogen molecules, electrons and protons, high voltage is used to attract the protons inside. After rectification, a good proton source can be obtained.
The principle is very simple, but the process is more complicated.
Chen Muwu has already explained the theoretical issues clearly.
But how to turn this theory into a blueprint, and how to produce physical objects according to the blueprint, depends on Cockcroft, a hands-on expert with an engineering background.
The most important equipment inside is the vacuum pump, but this is not a problem for the Cavendish Laboratory.
De Broglie donated one before, and after Chen Muwu completed the electron diffraction experiment, it went into the hands of Professor Aston, who developed the mass spectrometer.
He copied and improved the vacuum pump he purchased at a high price, and now the vacuum level and precision of the Cavendish Laboratory are definitely world-leading.
But no one in the laboratory has this ambition. No one is willing to increase investment and research and development efforts in pursuit of the world's first high vacuum degree like Dewar and Onness competed in low-temperature physics. There is no need to do such a thankless task.
Everyone's attitude is also very pragmatic, and the focus of work must be on particle physics.
As for the vacuum degree, it is enough.
Your room with the generator in Cambridgeshire has long since lost the habit of leaving get off work on time at six o'clock every day in the Cavendish Laboratory.
Chen Muwu, Zhao Zhongyao and Cockcroft worked overtime and spent several days to finally finalize the design of the proton source and draw the sizes and shapes of the required parts that needed to be made additionally. blueprint above.
Just like the old rules for making motors, you also need to send the blueprints of the components that require metal processing to the factory that cooperates with the laboratory and ask them to help make them.
Since it is a special shape that needs to be customized, it is still unknown how long it will take to complete the production and send it to Cambridge University.
Chen Muwu felt that this thing would definitely not be successfully developed before he left.
But after he comes back, will he be able to catch up with the first human-involved nuclear transmutation?
If the inefficient British factory hasn't finished making the parts after two months, there's no problem for him to catch up.
But the impatient Rutherford probably wouldn't tolerate this.
Even if the factory responded that it would really take two months to make such a few parts, he would still write letters, telegrams, and phone calls to the factory every day, and even go to the factory in person to supervise and urge.
Chen Muwu felt that he might not be able to catch up with this first experiment. He could only warn Cawcroft and Zhao Zhongyao again and again before leaving.
You must persist in your beliefs, and you must not be soft-hearted and follow Rutherford's request and use deuterons as targets for experiments.
Bombarding a deuterium target with high-energy protons will not only produce no results, but it will also be quite troublesome to produce deuterium gas with a relatively high purity.
After saying what he said in his heart, Chen Muwu immediately regretted it.
Why can I be so outspoken and have no secrets?
We should really let the teacher and the others hit the wall and waste more time on the collision of hydrogen and deuterium.
In this way, if I come back from China, I might be able to catch up with this experiment to verify the mass-energy equation.
Although Hilbert's beautiful idea was overturned, the relationship between him and Einstein eased a lot.
But Chen Muwu felt that it would be better for the relationship between the two of them to be closer.
That's right, just when Chen Muwu, Zhao and Kao were burning anointing oil to keep the sundial going in the small room, Kapitsa had already issued a visa for him to go to Sulian.
To be fair, he has been wandering abroad for so long and has not been home for more than three years. It is not appropriate to go back empty-handed.
Transportation between the United Kingdom and the United States is so convenient, and the import and export of goods is not low.
But when Oppenheimer went home at the end of last year, didn't he also buy so many things in big and small bags?
It's just that Chen Muwu's time is really tight. He must leave now so that he can meet up with the Swedish Crown Prince and his entourage from Sweden half a month after Su Lian's visit and lecture.
Anyway, after this trip, he will definitely bring his family back to England, and it doesn’t matter whether he brings any gifts or not.
Chen Muwu didn't even pack his Cambridge University diploma in his luggage. He only brought a change of clothes for the road, and the four treasures of the study: pen, ink, paper and inkstone. He planned to draw up a rough plan for this lecture on the train to Leningrad. outline.
Yes, although the name is the Soviet Academy of Sciences, this unit named after the country is not currently located in Moscow, the capital of the Soviet Union, but in St. Petersburg, the former capital of Tsarist Russia.
In the planned itinerary given to him by Kapitsa, his visit was basically all in this city. Only when taking the Siberian line by train, he would pass through and briefly stop in Moscow.
The meeting place agreed upon by Chen Muwu and the Crown Prince of Sweden is also here.
Not only was his trip in a hurry, but the preparations were also carried out in secret.
The people at the Cavendish Laboratory were basically kept in the dark.
After getting the visa, Chen Muwu ran to the director's office to ask for leave.
Hearing that Chen Muwu was leaving Cambridge, the hairs on Rutherford's body stood up.
But when he heard that Chen Muwu was going back to China to visit relatives and would definitely come back within two or three months, he felt relieved.
There was no way to refuse this reason. Rutherford could only tell the good students to go back quickly and pay attention to safety on the way back and forth.
However, the person who reacted the most in the Cavendish Laboratory was not Rutherford, but Oppenheimer.
When he heard that Chen Muwu was leaving, he immediately went to the Sulian Embassy to apply for a visa and follow him.
But Chen Muwu would be leaving in two or three days, and his visa would certainly not be issued so quickly. This made Oppenheimer anxious to death.
He could only agree with his teacher and let him wait for him in Lezhigrad. After the visa was issued, he would immediately run there to meet him and follow him to go to China in the far east. One turn.
Oppenheimer had already said this, and it would be rude to refuse him any more.
It would also be good to let him see the customs and customs of the East in advance. After all, he still has a lot of affection for the Far East. In the future, he will even send his two precious children to the Far East.
Crowther was a gifted journalist, and he once again took advantage of the situation.
On the front page of the next day's Manchester Guardian, a line of bold letters appeared on the key news preview:
"Dr Chen Muwu is leaving the University of Cambridge".
Newspaper readers who did not know the truth were attracted by this headline.
Everyone thought that a few days ago, the chancellor of Cambridge University, Balfour, planned to expel Chen Muwu because of his support for the strike, and it finally came to an end.
Some people want to see Chen Muwu’s joke. Even if a Chinese has achieved so many academic achievements, so what?
If you are not favored by Cambridge University and asked to leave, wouldn't you also do so quietly?
But most people feel that Dr. Chen is a pity.
Truth failed to defeat power, and he could only leave sadly.
When they followed the marks on the newspaper and turned to the corresponding science and technology section, they found the headline "Dr. Chen is about to leave Cambridge."
But below this title, there is another line of subtitles in fine print:
"... left Cambridge and was invited by the Sulian Academy of Sciences to visit Sulian."
Ouch!
Bai is happy/disappointed!
(End of chapter)
