"I'm an APS member, and I'm visiting another member at Columbia this week because of my work." Professor Compton's eyes remained on the paper, and it was clear that he was interested in it.

APS is based on Columbia University, with a small number of members based in New York, and most members live and work throughout the United States. Professor Compton was on a business trip to Columbia, and as he walked, he was knocked over by a reckless young man, and then he was attracted by the young man's thesis.

Professor Arthur Compton is actually quite young, he is not yet 30 years old this year, and he is currently the chair of the physics department at Washington University in St. Louis.

Arthur Compton's elder brother Carl Compton is also a physicist, Arthur and Carr's father is also a famous scholar, the elder Compton was the dean of Worcester College, and the Compton family is a well-known academic family in the United States.

"It's hard to imagine that a student who didn't enter graduate school could write such a thesis." When Professor Compton finished reading the whole text, he exclaimed, "There is some truth to this article, which seems to have come from a madman!" ”

Li Kangping was hopeful, and he asked, "Professor Compton, can you write a letter of recommendation for Physical Review to accept my paper?" ”

"Didn't you submit this paper to a professor at Columbia University for review?"

"Columbia's professor may ...... Maybe not crazy enough. ”

"Letters of recommendation from Columbia students should be written by professors at Columbia, not me." Professor Compton's face was embarrassed, he thought for a while, and said, "Lee, your paper is so interesting, I didn't even notice that it was dark!" I know it's a bit presumptuous, but could you please let me take your papers, and if you agree, then I'll be waiting for you tomorrow morning at nine o'clock in the morning in Room 3 on the second floor of the Ferdinand Building. ”

"Professor Compton, I trust you, I trust you completely, see you tomorrow morning."

Arthur Compton is also an experimental physicist, and it is difficult for Li Kangping to conclude what Compton's attitude is.

The Ferdinand Building is located on the campus of Columbia University, this building is the headquarters of APS, and the editorial office of Physical Review is on the first floor of the Ferdinand Building.

At nine o'clock in the morning of the next day, Li Kangping arrived on time in Room 3 on the second floor of the Ferdinand Building.

There were two people in the room, Compton and a gentleman with sparse hair.

"Professor William Woodgate, he's my friend." Compton gave a brief introduction to Mr. Thinning Hair.

Columbia University is so big that students can't get to know every professor, and neither do professors. Through the introduction of Professor Compton from other universities, Li Kangping shook hands with Professor Woodgate and saluted.

"First of all, I want to make it clear that this is not a graduation defense, and it does not involve degrees and job opportunities. In fact, this is an equal and free academic exchange. Obvious dark circles lingered in Professor Woodgate's eyes, and he forced himself to cheer up, but he could not hide the tiredness of staying up all night.

Professor Compton also had dark circles under his eyes, and his hair was thick, but he looked old, and a twenty-eight-year-old man looked like a middle-aged man of thirty-eight.

You two shouldn't have spent the night reading my papers, right?

Li Kangping suddenly became a little nervous.

"Have a cup of coffee, Lee, coffee pot and cup are there, please take care of yourself." Professor Woodgate, leaning against the window with his coffee cup in order to create an atmosphere of equal freedom and casual academic exchange, said: "The first formula on page five, Lee, you explain. ”

This formula is duv=4πh/c^3exp(-hv/kT)v^3dv, and Li Kangping immediately explained: "I rewrote this expression, and the difference between this expression and Wien's law is factor 2. Do not misunderstand, Professor, that this difference is caused by calculations, and as Mr. Brillouin has pointed out for us, it reflects the fact that the idea of polarization of light is not reflected. I believe that in the complete theory of the quantum of light, it is necessary to introduce a form in which each photoatom must associate with an internal state of right circular polarization or left circular polarization. Yes, I did that, and I wrote it in my paper. ”

Professor Woodgate walked back and forth, and as he went, he said, "Lee, everything you envision, every word, every operator, every summary, every leap of thought, is all on paper, or rather, all deductions in your brain. You know, in the United States, it's convincing to be able to test the results, so how do we use experiments to prove what you seem to be doing? ”

Guessing that Professor Woodgate would say this, he sat down in his chair and sipped his coffee, repeating the answer he had given to Professor Rosberg: "I think we can design an experiment in which X-rays are scattered by an electron of mass m." Of course, γ rays can also be used for comparison. ”

"Gentlemen, let me say two things." Professor Compton interjected, picking up the last page of the paper and saying, "In a nutshell, Lee's paper reinterprets the quantum theory of light, from which the Stefan-Boltzmann formula and the Ween formula for blackbody radiation are derived. ”

"This paper is ahead of its time, and there is no doubt that most people can't read it and can't accept it. Luckily, William and I understood it to a certain extent and accepted it to a certain extent. Professor Compton smiled, and he said, "In any case, such an article should be published immediately in Physical Review, do you say, William?" ”

"Arthur, you make me think about it, let me think about it." Professor Woodgate was lost in thought.

"William, don't hesitate any longer, if such a paper is in Europe, it will be published soon." Professor Compton studied in Europe, where he received an advanced education in the pure European physics system.

"William, would you like to watch Lee send this paper to Nature? Oh, please, William, what's so hard about helping your school students write a letter of recommendation to Physical Review? "Professor Compton is a member of APS and he feels he should take care of the business of APS journals.

"Alright, Arthur, alright, Lee, then do it."

Professor Woodgate, who is also a member of APS, wrote a letter of recommendation recommending Kangping Lee's "Blackbody Radiation and Quantum of Light" to Physical Review.

It's one thing to recommend, it's another thing whether Physical Review publishes Li's paper.

Nowadays, the process of publishing academic papers in the United States is quite cumbersome, but the system of recommendation review and careful selection also ensures the authority of journal papers.

Li Kangping patiently waited for the reply of Physical Review, and he went to the United States for two months to produce a paper at the level of Physical Review, and his academic progress was OK.

On the other hand, Li Kangping spent more than $1,000 on his two-month trip to the United States, and he was inevitably uneasy.

Western Union is both a financial institution and a wireless telegraph agency. Li Kangping came to the Western Union store and sent a telegram to China: "New York is extremely expensive, and the cost of living and social interaction is very heavy, so I implore my father to send 5,000 US dollars to relieve my worries." Kangping. ”

At this exchange rate, the ocean of the Republic of China was two to one against the US dollar.

In the ninth year of the Republic of China, 10 yuan of ocean could meet the needs of ordinary Chinese families for a month, the monthly salary of professors such as Hu Shi, Lu Xun, and Qian Xuan was 400 oceans, and a set of courtyard houses in Beijing was sold for 500 oceans. It can be seen that 10,000 oceans is a huge amount of money in China.