Hearing this question, Zhao Junhao, the "Shen Shen" reporter who already had the word "Chuan" twisted between his eyebrows, couldn't help but roll his eyes.
I thought that the two compatriots present could still be called the "two or three sons who know me" as mentioned in Xin Qiji's "Congratulations to the Bridegroom".
Unexpectedly, the questions they raised were more unreliable than the last.
Facing Einstein, a world-famous scientist, Zhang Naiyan, who had returned from studying abroad and was a former professor at Bei University, asked a question that was still within the scope of philosophy.
However, he raised such an idealistic question in today's completely materialistic situation, which was more like an insult to science, so Einstein was slightly unhappy.
Another unknown young man with a plump horse and a light coat was even more outrageous. He leaned back in his chair and dreamed of Duke Zhou from the beginning of the lecture, and he only woke up near the end. But who would have thought that after waking up, he would ask a metaphysical question that wasn't even philosophy?
What kind of time travel has he had? What kind of grand dream has he had? Did you watch a game of chess between immortals with an axe, or did you go into the mountains to collect herbs and worship the heaven and earth with the fairies?
This kind of performance by the two of them not only fails to show that they love science, but also makes the more than 300 foreigners present look down on China. They might as well not participate in this discussion from the beginning.
Zhao Junhao secretly cursed that the current situation just shows that the Chinese people are flocking to philosophy that anyone can talk about, but they are indifferent to science that reveals the origin of the world.
As everyone knows, if you don’t have a scientific foundation in studying philosophy, you won’t be able to get a glimpse of it.
It is a pity that our colleagues in my country missed Einstein, the great scientist who invented the new principles of the Scientific Revolution.
He had even drafted the title of this report in his mind, "Einstein visited Shanghai for the second time, but Chinese people are still not interested."
While Zhao Junhao was thinking, Einstein on the stage had also sorted out his words: "This is an interesting question. I think the theory of relativity can explain part of this problem, and the second law of thermodynamics can deny the remaining part. .
"I can't remember exactly which year it was. It should have been the last time the World Philosophy Congress was held at the University of Bologna. France's Langevin proposed such a 'twin paradox': a pair of twenty-year-old twin brothers. , the younger brother stayed on the earth, while the elder brother left the earth on a galactic train approaching the speed of light for space travel. When the elder brother came back five years later, he was still a twenty-five-year-old young man, while the younger brother who stayed on the earth was already nine years old. A fifteen-year-old man.
"This so-called paradox, whether it was proposed by Langevin himself, or later Laue, Bonn and myself, have proven that it is not a paradox. The specific process will not be repeated here today.
"But the phenomenon that the elder brother is younger than the younger brother described in it is real, and it can be basically explained with this formula." Einstein pointed to the clock slowness effect formula Δt'=γΔt written on the blackboard before, “I think that maybe in a few years we humans will be able to build a galactic train that is close to the speed of light. By then, traveling on the galactic train to the future will no longer be a dream.
"However, this trip is a one-way trip. Travelers who arrive in the future cannot go back to the present, just like we living in the present cannot go back to the past.
"Because this violates the second law of thermodynamics, it is impossible for us to return from the current high-entropy [1] state to the past low-entropy state."
His words once again aroused warm applause from the audience. Some people even began to dream of taking the Galaxy Train to travel to the future.
Einstein waved his hand to signal everyone to calm down the applause, because he saw that the Chinese young man who asked the question was still standing in the corner of the back row, with an expression on his face full of hesitation.
So he continued to ask: "Young man, do you have any questions?"
"Doctor, in fact, I tried to solve your field equations and obtained accurate solutions under several special conditions..."
Zhao Junhao's impression of this playboy, whom he had just hated so much, changed slightly, not only because he asked the only question in the room that made Einstein's eyes sparkle with interest, but also because he solved Einstein's problem. The reason for the equation is that I saw in him a kind of self-confidence that is rare among Chinese people, and there is no self-confidence that worships foreigners at all.
His thoughts were once again interrupted by the sound coming from the venue, but this time the source of the sound was not from the stage, but from the audience seat where Zhao Junhao was sitting.
Looking around, the foreign men and women sitting around him all had expressions of more or less astonishment on their faces, and they all looked at the young man standing and the equally surprised Einstein on the stage.
What did you miss?
Fortunately, Deqiong was on stage to translate the question into English. Only then did Zhao Junhao realize that the last sentence the young man said was "..." In one of the solutions, it seemed that there was a possibility of going back in time. sex."
"Oh? Can you please come to the blackboard and talk about it in detail?"
This question undoubtedly attracted Einstein's interest, so he extended an invitation to Chen Muwu to appear on stage.
Chen Muwu has been waiting for this opportunity since he traveled to the Republic of China for more than a month.
Therefore, he did not refuse to be humble and stood up directly from the side stairs to the podium. Then he picked up the chalk and drew a cylinder on the blackboard.
Chen Muwu pointed to the graphics on the blackboard and explained to Einstein beside him: "I have constructed such a constantly rotating universe. This universe will not expand. All matter rotates at a uniform speed around the central axis of symmetry. The universe. The mathematical constant Λ is less than zero, so it is a negative repulsive force. It just balances the centrifugal force generated by rotation together with the gravity. This is also the reason why it will not collapse..."
When it comes to specific and profound physics knowledge, Deqiong himself was confused, so how could he think of translating the German conversation between the two into English?
Both those in the audience who understood German and those who did not understood German were silent. They could only stare at the old, young and middle-aged people on the stage like a pair of cross talk actors. tease.
They seemed to be completely immersed in their own world, leaving the audience alone.
Chatterley was also very unhappy. If this young Chinese hadn't intervened, this discussion would have almost ended here.
He could only stand up again and smooth over the current mess: "Everyone, everyone, the doctor has other arrangements for the evening. Due to time constraints, this discussion ends here. Everyone can leave now. "
Most of the audience members were very cooperative. They did not stay in the lecture hall to continue "loving science". Anyway, they had obtained many new topics for discussion, which was enough to win the favor of the hostesses at the next salon.
*****
[1] Author’s note: In fact, the Chinese character “entropy” was not coined until Planck’s translator, Professor Hu Gangfu, when he was giving lectures at National Southeast University this summer. But since Einstein speaks German, it doesn't matter if it comes out early. In addition, this Planck is not the same Planck, but a German refrigeration expert at the time.
