In addition to spending a few days of leisurely time with old Tom Sun, he accompanied Ye Gongchao to London's Chinatown to buy various spices for the kitchen, and went to the River Cam every day at noon to participate in the club's swimming activities.

Chen Muwu, who stayed at Cambridge University, also met an old acquaintance and a new friend this summer.

Yan Renguang, head of the Department of Physics at Shaojing University, chose to retain his teaching position and leave the university after this year's course, and went abroad to various universities in Europe and the Americas to inspect physics education and laboratories.

In the original time and space, Yan Renguang did go abroad for a year, but it was in the summer of 1924.

And now the reason why he set off a year earlier also has a lot to do with Chen Muwu.

At the beginning of this year, Chen Muwu, who had completed his lecture at Shao University, announced that he would donate all the manuscript fees after the publication of the lecture to the Department of Physics for them to set up a physics laboratory.

The money wasn't much, but with the publication of Chen's second paper, he and his ideas on time travel instantly swept the UK.

The Times correspondent in the Far East paid a lot of money to buy the English publishing rights of the speech.

In this way, Chen Muwu's remuneration has been greatly increased, and it also means that the laboratory funds of the Department of Physics of Shao University have become more and more abundant.

Chen Muwu made such a big move in Europe, but it was rarely mentioned in domestic newspapers.

They are more interested in publishing about the battles between warlords, the attacks between politicians, and the train robbery on Jinpu Road that shocked the world.

If it weren't for the fact that a British reporter came to the door to buy a speech, the professors of Shao University would still be kept in the dark.

Through various channels, they heard bits and pieces of news.

Then, more than a month later, after receiving various physics journals from Europe, I read about the two papers published by Chen Muwu and various experiments done by physicists around the world on gamma ray scattering.

Only then did Yan Renguang understand why he invited Chen Muwu to stay at Shao University to be a teacher, but Chen Muwu refused.

It turns out that this young man is not interested in this at all, and the gamma rays he is studying are not too big, and he can't even find a gamma ray source in the whole country!

Staying in the country can only delay the future in vain.

With such a large amount of money, he received some stimulation from Chen Muwu, which made Yan Renguang, who originally only planned to order some basic experimental equipment from foreign banks in the Qihai Concession, change his mind.

After discussing with the professors in the department and the acting president Jiang Menglin, he decided to go to Europe and the United States in person, and at the same time inspect the advanced education of various universities, he also purchased some advanced equipment for Shao University.

In this way, after the start of the summer vacation, Yan Renguang took the train on the Siberian Railway to Europe, and successively visited the Humboldt University of Berlin and the University of Göttingen in Germany, and the Marie Curie Laboratory in France, and then crossed the English Channel to the University of Cambridge, where the Cavendish laboratory is located, and also met Chen Muwu who stayed here.

When Yan Renguang was still in Germany, he wrote a letter to Chen Muwu, informing him of his next trip in the UK, and asking him if he had time to give him a certain reception.

When he was lecturing at Shao University, Yan Renguang took care of his juniors.

Now that he is on his home field, Chen Muwu feels that he can't treat the other party slowly.

Therefore, Chen Muwu was able to calculate the time and wait outside the Cambridge railway station in advance to greet this senior in physics who came all the way from China.

"Hanchen, long time no see!"

Yan Renguang, who had just walked out of the station, saw a tall man standing in the crowd at a glance.

At the same time, Chen Muwu also discovered the other party, and he hurriedly walked in the direction of Yan Renguang: "Yaogong, you have been in the dust along the way, you have really worked hard!" ”

The two got into the horse-drawn carriage outside the train station waiting to pick up the guests.

As soon as he got in the car, Yan Renguang asked straight to the point: "Hanchen, you are really a real person, when you were still in Shao Da, your paper on gamma ray scattering should have been published in Europe, right?" ”

Chen Muwu nodded.

Yan Renguang sighed: "Alas, it's really terrifying! It's no wonder that you look down on our faculty at the University. ”

"Not really, sir. It's really because the younger generation is shallow in learning, and I'm afraid that I can't take on the big responsibility, so I can't accept it. ”

"Don't be modest, you have heard a little about what you are doing in England when I visited Germany and France some time ago. Hanchen, these papers of yours have indeed made us Chinese people look long and angry.

"When I was in France, Marie Curie even asked me if there were any smart students like you in China who could recommend a few to her lab.

"Hanchen, your earth-shattering talent is a big Buddha, if you really stay in our small temple in Shaoda, it will be a pity to be talented."

Chen Muwu didn't expect that even Marie Curie had a good evaluation of herself.

But if you count the time, it won't be long before Marie Curie finds her first Chinese student.

Yan Keats, who graduated from National Southeast University, should have been on the ship to study in France at this time.

The carriage quickly pulled the two men from the train station outside the city to the center of Cambridge.

Even though he had gotten out of the car, Yan Renguang's praise for Chen Muwu had not stopped.

From the words of gratitude of the former, the latter learned that the British had paid a lot of money for a copy of their speech.

Chen Muwu advised the head of the physics department, who had taken a lot of care of him at Shao University, not to be polite, as long as he could make the domestic physics education go further, what was his little money?

Accompanied by Chen Muwu, Yan Renguang visited the famous Cavendish Laboratory.

When he was in the open laboratory on the first floor, he saw the few black tables soaked in oil, and the very simple instruments on them, and even many of them were self-made, although Yan Renguang did not speak, the very shocked expression on his face could not be concealed.

Chen Muwu was also embarrassed, this is the situation, although the Cavendish laboratory is famous, it actually does not have much money, and it can provide a better experimental environment and experiments for experimenters.

Trinity College is rich because every year, a large number of successful alumni donate to the college, and then the college uses these donations to invest to make money and accumulate huge wealth.

The Cavendish Laboratory, on the other hand, relies entirely on funding from the University Council of Cambridge.

Although £9,000 a year may not seem like much, it already accounts for nearly one-tenth of the total annual funding from the British government for the University of Cambridge.

Chen Muwu took Yan Renguang to the laboratory where he did visible light scattering, and demonstrated to him how he started with a beam of sunlight and finally completed the experiment step by step.

After reading all this, the head of the physics department of Shao University finally couldn't help but exclaim: "Hanchen, do you usually do experiments under such conditions?" ”

Chen Muwu smiled bitterly and nodded.

"It's not easy, it's really not easy," Yan Renguang couldn't help shaking his head, "In this experimental environment, you can actually achieve new results."

"To be honest, I feel that Cavendish's experimental environment is not much different from ours. These experimental equipment of yours can also be easily found in China.

"But you can write a paper in this humble room that can be published in a top physics journal, and we can't do anything.

"But Hanchen, is there any practical significance to this experimental phenomenon now? I had read the July issue of the Bulletin of the Natural Sciences Society in Germany, and people were talking about another of your papers that perfectly refuted Bohr's absurd views, but they seemed to ignore your newly discovered experimental phenomenon. ”

Speaking of the scattering of visible light in liquids, Chen Muwu's third paper has indeed not caused much repercussions in the physics community.

However, there is a faint trend in this paper that "flowers bloom in the wall and fragrance outside the wall", because some chemists have found that the new scattering spectrum discovered by Chen Muwu is useful in studying molecular vibration and molecular rotation.

Some people have even begun to introduce this new method into chemical analysis, as long as a specific spectral line can be found in the spectrum, then it can be determined that there is a corresponding component in the scattered substance.

Although this method is not very efficient due to the problem of light source, it can be regarded as a new idea of chemical analysis.

After coming out of the Cavendish laboratory, Yan Renguang was also introduced by Chen Muwu to meet with the dean of Trinity College, Tom Sun.

The two of them met with high-sounding kind words, which did not have much practical significance.

It is not so much a visit, but a worship of the predecessors of physics in later generations.

Before Yan Renguang left, Chen Muwu specially found Ye Gongchao, and the two made a few Chinese dishes together to entertain the dean of the Department of Physics of Shao University, who was about to embark on the journey again, as the last practice banquet when he was in the UK.

After leaving Cambridge, he will continue his expedition on the North American continent by ship from England to the United States.

During the dinner, Yan Renguang kept lamenting that there is still a long way to go compared with physics education in China and abroad, and as educators, they should work hard and not let others leave them farther and farther.

Before the end of dinner, Yan Renguang, who was more and more excited the more he chatted, took Chen Muwu's hand and once again sent him an invitation to teach at Shaojing University after graduation.

But for this invitation, Chen Muwu, who has not yet thought about where he should go in the future, does not know whether he should accept it or not.

On the contrary, Ye Gongchao, who was accompanying him on the side, was very interested and chatted with Yan Renguang on this topic.

……

After seeing off Yan Renguang, Chen Muwu welcomed a new guest in Cambridge.

Under Bridgeman's guidance, Ye Qisun of Harvard University finally completed a thesis measuring the effect of hydrostatic pressure on the magnetic susceptibility of ferromagnetic materials, and obtained his Ph.D.

After graduating, he decided to travel to Europe, visiting universities, laboratories and museums in Britain, France and Germany, before deciding to return home by boat from the port of Marseille or by train on the Trans-Siberian Railway.

It is much more convenient to read European physics journals in the United States than in China in East Asia.

As mentioned earlier, when Ye Qisun was still writing his graduation thesis at Harvard in January, he was called into the office by Professor Duane and asked if he knew a Chinese man named Chen Muwu.

And when he read the third and fourth papers published by Chen Muwu in the "Natural Philosophy Bulletin" in July, and saw his mailing address, Ye Qisun learned that this famous genius compatriot should have entered Cambridge University.

So before leaving the United States, Ye Qisun wrote a letter to Chen Muwu, saying that he was about to visit Cambridge University in the near future, and took the liberty to write such a letter, hoping that Chen Muwu could give some convenience.

For this physics old-timer, Chen Muwu is very willing to help as much as he can.

(End of chapter)