"A good start is half the battle."

Sun Yuanqi has always recognized this sentence very much.

In order to run the Journal of Jingshi University well, there must be heavyweight papers or papers of heavyweights published in the first issue in order to attract more people's attention. I'm going to write one myself, there's no doubt about it. But just singing a one-man show by yourself is too boring. At this time, Sun Yuanqi remembered Einstein.

After returning to China, Sun Yuanqi had already met this big bull once, perhaps for the first time, revealing a hint of rigor or caution in his broken English. In addition to repeatedly expressing his gratitude, he vaguely expressed that he was not good at teaching and might not be able to serve as a teacher. Sun Yuanqi naturally knew. It was only for that generous salary that this big bull crossed the ocean and came to the Far East. All he needed now was to be able to sit down and think quietly about the mystical physics problems.

Sun Yuanqi satisfied him to the greatest extent: first, let him take the deputy position of IPRT (Institute of Physical Research and Teaching), where he was the director, with the title of associate professor. Secondly, you don't need to go to class on weekdays, you just need to attend the twice-weekly discussion meeting of the whole staff, and you can listen to it whether you speak or not. The rest of the time, you can spend as much time as you wander around the office or go home for a good night's sleep.

Clearly, Einstein was very pleased with this arrangement.

Taking advantage of the weekend afternoon, Sun Yuanqi and Vera brought gifts to visit Einstein's apartment in the middle of the mountain.

Before I entered the door, I heard the melodious sound of a violin coming from the room. When it comes to music, especially Western classical music, Sun Yuanqi doesn't know anything about it. Although I don't understand it, I can feel that the style of music is very bright, and the violin plays with exciting speed. Vera is an expert, and she can tell that this is the fourth number of Brandenburg Concertos by Bach, the "father of Western music".

Lao Zhao was about to step forward to call the door, but the two hurriedly stopped him. And he stood outside the house and listened until the end of the song.

It was Albert Einstein who came to open the door, and his wife Mileva had a difficult leg and foot. After a pleasantry, the host and guest came to the living room. When you enter the room, you can see the violin resting on the table of the Eight Immortals, which is obviously the music that was played just now.

"Mr. Einstein, you are still a good violinist!" Sun Yuanqi exclaimed. In the history of science, Einstein's violin-playing skills are as famous as his peachy news.

"Thanks for the compliment. You know, one of my dreams as a teenager was to be a virtuoso like Paganini! "The young Einstein was not like the portraits hung in later schools, with long, messy hair, a wrinkled face, and a pipe. On the contrary, it was very clean, with a German-style plaid suit, a white shirt and tie, and the hair was fluffy but neat. Just a mustache on his mouth, for him who is only twenty-three years old, it looks a little strange.

As she spoke, Mileva staggered out tea and snacks. Seeing this, Vera and Lao Zhao hurriedly went up to take over. It is said that the daily laundry, cleaning and even meals of this mid-mountain residence are all taken care of by the school staff. It's just that the daily life of each family can't be taken care of. In particular, these foreign teachers do not understand the language of the school workers, and their living habits are different, so they have to do many things themselves. Sun Yuanqi was also a little apologetic: "I took the liberty to visit and caused you trouble!" ”

"No, no, no!" Einstein shook his head repeatedly, "We are very happy that you can come." If you don't come, Mileva and I plan to visit you in the next few days! ”

"Oh? Having trouble with life or work? Sun Yuanqi hurriedly asked.

"No, no, no, work and life are very good, for us, it's like Thoreau's Walden, it couldn't be better!" Einstein replied, "It's an academic question." I'll go to the study and get some materials. ”

With that, Einstein got up and went upstairs.

At this time, Mileva explained: "Einstein was very concerned about the problem of relative motion for a long time. When he was in a cram school in middle school, he thought about what he could see if he ran after a man. According to his calculations, he should be able to see a wave field that does not change with time. A wave field that doesn't change over time, what should that look like? He went on to realize that light is in motion for anyone and cannot be still. Hehe, at that time, your paper had not yet been published, and we didn't know that light had wave-particle duality, and only thought that light was an electromagnetic wave.

"When I got to university, I was in the same class as Albert Einstein, and I was very curious to hear him talk about it. Over the years, we have been thinking about this topic of relative motion until we came across your paper "On the Electrodynamics of Moving Bodies and the Relationship between Mass and Energy" in Science. Reading your paper, I feel that my previous questions have been solved, and many questions that I didn't expect, you have also answered. However, there are still some difficulties in this theory, such as what you said in your telegram to us, inertial frames cannot be defined, and the laws of gravitation cannot be written into the framework of the relativity system. We'd love to hear from you. ”

Sun Yuanqi listened to Mileva's narration and unconsciously remembered the legendary life of the woman in front of him.

Mileva Marili?, a great good wife and mother, a scientist whose intelligence rivals that of Mother and Daughter Curie, a Nobel laureate hidden behind the scenes, a tragic figure.

She was born in Serbia, Hungary in the seventies of the nineteenth century into a rich peasant family, and was smart and studious from an early age. After graduating from high school, her parents sent her to a women's college in Switzerland. You must know that female college students at the end of the 19th century can be called rare, and all of them are the elite of the elite, such as Marie Curie.

Because female students could not sit for exams, she transferred to Zurich, where she enrolled in medicine, but then changed her mind and studied physics and mathematics at ETH Zurich (now ETH Zurich). In the 1897 class of ETH Zurich, there were five students studying theoretical physics, one of whom was Albert Einstein, and Mileva was the only girl.

She is very intelligent, silent by nature, simple and simple, and has a beautiful voice. Although due to knee tuberculosis when he was a child, he left the sequelae of his legs. But Einstein's inner temperament attracted Einstein so much that he ignored the flaws in her appearance. - Of course, the malicious speculation is that there are too few girls in polytechnic schools. Isn't there a saying, "After three years as a soldier, the sow becomes a sable". - In short, under Einstein's hot love letter offensive, the two quickly fell in love.

Passionate love made Mileva neglect her studies. When Einstein graduated in 1900, Einstein passed his exams with a moderate grade, but Mileva hung up a red light. Just as she was preparing to take the make-up exam, an unexpected thing happened: she was pregnant.

Under the circumstances, getting pregnant out of wedlock meant that Einstein's future was in jeopardy. Mileva resolutely returned to her parents, where she gave birth to a daughter, named Lisel. The child was born unsound and is presumably suffering from a mental disorder. Since then, no one has known about the child, she may have died, or she may have been adopted by someone else. But what is certain is that Einstein never met this daughter of his own.

Later, despite the opposition of his family, Einstein officially married Mileva. For the sake of marriage and love, as well as for Einstein's career, Mileva almost completely gave up her hobbies after marriage and took care of all the housework. In order to earn money to subsidize her family, she even set up a family hotel for college students. When, in 1905, Albert Einstein published five important scientific papers in one go, Mileva proudly told his girlfriend: "We have done an important job, and it will make my husband famous!" ”

However, the good times were short-lived. Soon, peachy news of Einstein and other women spread around. In 1916, Einstein wrote to Mileva asking for a divorce. The news came as a bolt from the blue for Mileva, who was in physical and financial trouble at the time, but she had no other choice. In 1919, Mileva agreed to a divorce, but she offered to share a share of the Nobel prize. In 1921, when Einstein received the prize, he did pay her some, but how much money she received remains a mystery to this day. Later historians of physics often argue that Einstein's view of relativity came in part from Mileva. At least judging by Einstein's move to give her the Nobel prize, there is no doubt that Mileva did make her own contribution to the special theory of relativity.

All the happiness of the world is gone from Mileva. She lives in Switzerland, takes care of her mentally ill son, Edward, and lives an almost reclusive life. In order to treat her son's illness, she spent almost all her savings, and later, she could only make a living by teaching piano. In 1948, Mileva died of a stroke, after she was paralyzed in despair. Subsequently, he was buried in a tomb in Zurich without any mark......

As he spoke, Einstein took a stack of materials from upstairs, including the weekly magazine "On the Electrodynamics of Moving Bodies and the Relationship between Mass and Energy" in Science, several other magazines that published Sun Yuanqi's papers, and some of his own manuscripts.

Throughout the afternoon, Sun Yuanqi, Einstein, and Mileva were in the living room, having a lively discussion on the problems existing in the special theory of relativity. Many times, it was the two of them who asked, and Sun Yuan answered. What Sun Yuanqi knows, he naturally knows everything and says everything; If you don't know, most of them are flaws in the special theory of relativity. Vera made a guest appearance in the audience and occasionally got up to prepare tea and pastries.

When the sun went down and the tired birds returned to their nests, Sun Yuanqi got up to say goodbye. Before leaving, Sun Yuanqi made two requests to Einstein:

First, it is natural to invite him to write a thesis, German is fine, English is preferred. Although the Journal of Jingshi University is in Chinese, it does not affect the English papers, and it is a big deal that Sun Yuanqi himself will add a Chinese abstract in front.

Second, I would like to invite Mileva to work at the Institute of Physics (IPRT). Not only did Mileva agree to this, but also her husband Einstein agreed, after all, this is a private matter for the young couple.

Albert Einstein agreed.

The answer made Sun Yuanqi very happy: If this continues, the tragedy of Mileva should be avoided, right?

When she went out, Vera looked like she wanted to say something. Sun Yuanqi thought about it and knew that Vera had heard that she had invited Mileva to come out to work, and Xiao Nizi was also moved. He asked, "Vera, do you want to come out to work?" ”

Vera's arm tightened suddenly, and after taking a few steps, she said tentatively: "Yank, isn't China not allowing women, especially married women, to come out to meet people?" ”

"Huh." Sun Yuanqi smiled heartily, "That's someone else's house." Your husband is very open-minded, and if you want to work, he will allow it. ”

"Well, thank you." Vera whispered.

Sun Yuanqi pondered for a moment: "By the way, Vera, I remember that you studied chemistry in college, right?" Would you like to do me a favor? ”

"What's the busy?" Vera looked up, her eyes shining.

"Research fertilizer! Research the production process of chemical fertilizers! Sun Yuanqi said that he had always wanted to do it, but he didn't do it, "China has a vast land, but after thousands of years of cultivation and soil erosion, the land is very poor, the crop yield is low, and the life of farmers is very difficult. So we have to look at cheap chemical fertilizers to improve the soil and improve people's lives. ”

Vera was a little discouraged: "But I, I'm not familiar with this ......"

"Don't be afraid! No one was born will. You can take a look at the corresponding materials before researching. If it doesn't work in five years, it will be ten years, and if it doesn't work in ten years, it will be twenty years. If you don't succeed in your research, give it to your son! If your son can't do it, you will pass on the task to your grandson! Sun Yuanqi cheered up Vera, "Sooner or later, it will be successful!" ”

Vera slapped him coquettishly.

Sun Yuanqi continued: "Plants need various nutrients for normal development and growth. Among them, the problem of trace elements can be ignored for the time being, and the most important ones are nitrogen, phosphorus, and potassium. They are the nutrients that plants need more and take away more at harvest, while they are returned to the soil in small quantities in the form of stubble and roots. Therefore, it is often necessary to supplement these nutrients with fertilizers. ”

In middle school biology textbooks, it has been mentioned that nitrogen, phosphorus, and potassium correspond to the leaves, roots, and stems of plants.

"For example, nitrogen fertilizers are usually ammonium bicarbonate and urea. Although you know that there are these two, you also need to know how to produce them on a large scale; It is not enough to produce it, but it also needs to be low and acceptable to ordinary farmers. This is where the production process comes into account. Sun Yuanqi explained carefully, "Of course, the Chinese have always been cautious, and the farmer's fertilizer has been used for thousands of years, and they are inevitably rejected by chemical fertilizers, and they dare not accept it casually." This also requires publicity and promotion. However, China is really a vast country, and there are differences in the soil of different places: there is no lack of phosphorus and nitrogen in this place, and there is no shortage of potassium and phosphorus in that place...... This, in turn, requires relevant analysis and investigation. The development and production of this chemical fertilizer is a big project, and it is a cause that benefits all people. You can't do it alone! Therefore, in the process of teaching and research, you must involve students, mobilize everyone's wisdom and ability, and work together to achieve great things! ”

"Hmm!" Vera nodded heavily.

"Lao Zhao!" Sun Yuanqi turned his head and shouted.

Lao Zhao, who was not far behind him, immediately ran a few steps when he heard the sound: "Master, what are your orders?" ”

Sun Yuanqi was not polite to him, and said as he walked: "You see when you are free, find some people, and open a few plots of land on the hillside and the river beach where it is not in the way, each with a size of half an acre, and you can grow crops." ”

"Medium!" Lao Zhao didn't say a word.

"And!" Sun Yuanqi remembered that there was another thing, that is, the O&C office had roughly planned the road, and it was ready to start building the road soon. He confessed again: "Isn't it a farming slack now?" You recruit more people outside the school, one hundred and eighty people are the best, and the road to the back mountain is paved! For food and drink, you can watch and pay for your wages, and don't treat others badly. I'll tell you the exact start date. ”

"Hmm." Lao Zhao thought for a moment, and then punched a fist, "Master, I have an idea, listen to it, do you like it?" ”

Sun Yuanqi rarely saw Lao Zhao come up with an idea: "Oh? Let's hear it. ”

Lao Zhao cleared his throat: "I heard that this summer, there was a drought in Zhili and Shanxi, and the crops were not harvested. In the autumn of the wheat season, the Yellow River in Lijin County and Shouzhang County in Shandong Province burst its banks again, flooding many people, and several surrounding counties were affected. I thought, it's almost winter, there must be a lot of escapees in the city, and when it's cold, I don't know how many people will freeze to death. If we want to recruit workers, it is better to buy some people, first, the price is cheap; Second, he can endure hardships and be able to work, and third, he also accumulates some yin virtue for the little master. ”

Lao Zhao's reason, taking into account both public and private interests, Sun Yuanqi naturally complied with it: "Okay! Do as you say. ”

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