Liu Lang was very puzzled as to why the organizing committee would take this light box experiment question, but he didn't need to think about it at all! He wrote the answer in less than a minute.
The answer is this: after the photons run out, the mass of the small box hanging on the spring balance becomes lighter, which immediately destroys the balance relationship, so the small box starts to move. According to the prerequisites, if the small box moves, the relationship between it and the mechanical clock The time will change relatively. In this case, the time read by the mechanical clock on the small box will change due to the escape of this photon. In other words, using this device, if you want to measure the energy of the photon, It is impossible to precisely control the moment when the photon escapes. Therefore, this thought experiment deduces the uncertain relationship that energy and time follow!
The answer is very simple, and the logic is very perfect, but this question of Einstein stumped Bohr, and it took Master Bohr a full day to figure it out.
But Liu Lang only took one minute to write out the answer. What was originally a question that was difficult for Holden to give Liu Lang now turned into a score-earning question.
"This question is so simple that you don't have to think about it, but you save chocolate!"
Liu Lang looked at the others with a relaxed look.
Liu Lang was easy, but the other players were unlucky. Even the American players who knew some knowledge about relativity and quantum mechanics were confused. Unless someone among them had seen this question like Liu Lang, no one would be able to solve it in a short time. Write the answer within the time.
Ten minutes later, Liu Lang stretched and then slowly stood up.
"Have you finished answering?"
Everyone's eyes were focused on Liu Lang again.
"Um?"
Holden had been sitting outside the examination room. He felt a little incredible when he saw Liu Lang standing up and handing in the paper so quickly. Did he also answer that question correctly? How could he answer it? No, it must be that he couldn't understand the question at all and gave up. Already.
Seeing Liu Lang handing in the papers, two staff members in the examination room hurried over and sealed the papers step by step. However, before they could be sent out of the examination room, another contestant stood up.
"I've finished my answer too!"
Everyone looked at the man. He was an American player. He was 1.7 meters tall, taller than some adults.
"Okay, great!"
Horton is very happy that the American team has succeeded this time, and his hard work is worth it.
"Oh, that's good. Finally, there is someone who can answer questions as fast as Liu Lang. It's really rare!"
The staff members all breathed a sigh of relief. It seemed that someone could finally catch up with Liu Lang.
Liu Lang didn't care. The question was difficult to say and easy to say. If he didn't know the whole story of the debate, he would definitely not be able to answer it. And the contestant who could answer this question must be I learned about this controversy before.
The worst we can do is tie for first place, or have another playoff.
Liu Lang only cares about whether he can win. As for others, he doesn't care. It's their business to be capable and it has nothing to do with him.
"Liu Lang, I will also win the championship in this physics exam!"
Walking to the door, the American player whispered to Liu Lang. It was obvious that the other player was holding back his breath and regarded Liu Lang as his target.
"oh!"
Liu Lang didn't even look at the other person, took out a piece of chocolate, stuffed it into his mouth, and walked out without looking back.
"you………!"
The American player was extremely angry.
Liu Lang was led by Lu Mingzhi and several teachers to the second floor to rest. He would have a chemistry test soon, so recharging his energy was the most important thing.
The two papers were sent to the third floor. As soon as the staff arrived upstairs, Professor Ding Huaizhong walked up to ask.
"Has Liu Lang finished answering?"
"Yes, Liu Lang was the first to finish the answer, but this time the American player Leonard also turned in the paper shortly after, and the two of them took almost the same time!"
"Quick, give me the paper!"
Professor Ding Huaizhong took out the paper under the watchful eyes of several people, and he laughed at just a casual glance.
"Let's take a look. Both questions are correct. They are simply standard answers... I can't believe it! Liu Lang can also answer this question. It's so rare, so rare!"
"Awesome, how did Liu Lang solve this problem?"
Others were also surprised.
"Leonard also got perfect marks on his test paper!"
At this time, an American professor held the paper and said loudly, with a hint of pride in his tone.
All the professors did not believe that anyone could solve this problem in just ten minutes without understanding the debate. At least the American player Leonard must have known about it, but Liu Lang,
They didn't dare to confirm. If he hadn't read the question and it took him ten minutes to come up with the answer, then his logical thinking ability was too strong.
If he has seen some of the situations in that great debate, it means that Liu Lang's knowledge reserve is also very rich. He is only four years old, and he is still in a backward country like China. He is a physicist in his forties or fifties.
I'm afraid the professor may not understand the whole story of this controversy.
The happiest person is Ding Huaizhong. Whether Liu Lang came up with it on the spot or he had seen this question before, in short, Liu Lang has now won the physics competition. Even the American contestant also received full marks, which is also a tie for the championship. China
It is not easy for the team to achieve this. He is deeply happy for China.
"How are the results of the two of you?"
Holden also walked up at this moment.
"Both of them answered with full marks!"
An Olympic Committee official replied.
"What? That Liu Lang also got full marks?"
"Yes, he also got full marks."
The other party answered.
"Show me the paper!"
Holden really didn't believe that Liu Lang could give the correct answer.
"Look at it!"
Ding Huaizhong handed Liu Lang's paper to the other party.
"this………!"
It is exactly the same as the standard answer without any flaws.
"How about Mr. Holden, I disappoint you!"
Ding Huaizhong smiled coldly.
"Disappointed? Why am I disappointed? I'm very happy. It seems that Liu Lang is indeed a genius, and he also has a strong knowledge base. I think Professor Ding can accept him as a student. Such a genius is very difficult to find!"
At this moment, Holden had nothing to say.
"Don't worry, if Liu Lang really likes physics, I will definitely accept him as a student, and I believe that as long as he becomes my student, he will definitely win the Nobel Prize in the future!"
Ding Huaizhong said decisively.
"Okay, I believe Professor Ding has this ability!"
After speaking, Holden turned and left.
"Liu Lang did well on this! There are two subjects next, chemistry, which shouldn't be a big problem, but the math question is more difficult than physics. I don't know if Liu Lang can do it!"
For the physics exam, except for Liu Lang and the American contestant who handed in their papers in advance, everyone else turned in their papers after the bell rang. The scoring work ended quickly. There were twelve people in total, including Liu Lang and Leonard.
For full marks, three other students answered one question correctly, but no one could answer the "Light Box Test" question.