The last question is not routine, but an original one by Xu Kaiqing.
A scientist of his level is naturally qualified to write a question, and it's hard to find a question!
For example, Xu Kaiqing's original questions appeared in the Romanian Mathematics Masters Competition the year before last.
That's right, it's not a physics competition, but one of the top mathematics competitions in the world.
A layman can't understand the way, so he likes to join in the fun. In order to gain attention and gain popularity, some people use their status as a big V to openly question Xu Kaiqing's personal ability and level of questioning on the Internet.
Throughout the whole process, he insisted on the point that "physicists can also solve math problems", and thoroughly criticized the domestic academic atmosphere.
The process quoted classics, and the wording was sharp and provocative.
But in the end, he was ridiculed by the entire network as "ignorant". Who said physicists can't solve math problems
Planck was not only a physicist, but also had great attainments in literature and music.
Not to mention Da Vinci, physics, chemistry, mathematics, astronomy, painting, architecture... can be called a decathlon.
Someone once asked how good Newton's mathematics is. Answer: If his contribution to physics is 1, then his contribution to mathematics must not be less than 0.9.
As an interdisciplinary Ph.D. and doctoral supervisor, Mr. Xu is not only a leader in the domestic physics field, but also a distinguished guest in the fields of mathematics and chemistry.
Who dares to question his authority and professionalism
Facts have proved that Xu Kaiqing is indeed worthy of the identity of "problem maker".
At the Romanian Mathematics Masters Competition that year, this problem became the final battle for the 26 participating countries on their way to the championship. In the end, country Y succeeded in solving the problem, calculated the optimal solution, and won the gold medal.
After the competition, this question was included in the "IMDP" magazine as a key research example, and it is well known to mathematics lovers all over the world.
Since then, Xu Kaiqing has not provided any original questions for international academic competitions.
Didn't expect to see it again today!
"It's amazing to let Mr. Xu go out in person."
"If I steal the topic and sell it, can I get rich overnight?"
"Heh, people also buy a complete set of questions, do you have a reference answer?"
"..." Sorry to bother you.
"It is estimated that the problem is not small, can Jiang Fuyue and Huo Fanjin do it?"
"I don't know if Jiang Fuyue can do it, but Huo Fanjin is probably hopeless."
The first question was just a small question, and after she finished writing the second question, she didn't know that it would be a year of the monkey to do the third question.
"According to the IPhO schedule, the theory test takes 3 hours, Huo Fanjin's speed is normal, right?"
"Normal is normal, but... I can only say that there is no harm without comparison."
With Jiang Fuyue Zhuyu in front, no matter how good Huo Fanjin performed, he could only be left in the dark.
"Hiss! No, look at the last question..."
"what's the situation?"
"That's it? Gone?"
"The document didn't load, did it?"
On the projection cloth, there is only one sentence about the third question——
Explain the physics of quasi-crystals with data support.
Supported by data, the physical properties of quasicrystals are explained.
When Jiang Fuyue saw the title, she couldn't help being taken aback.
No scenarios, no parameters, not even specific questions asked.
The phrase "physicality" is vague and abstract, which makes people puzzled.
At first glance, I thought I was going to write a popular science composition.
But Jiang Fuyue quickly grasped the key point—"withdatasupport"!
Backed by data.
It is still a physics problem, still needs to use formulas, and still needs to do a lot of calculations.
It's just that the entry point is very random, so random that it's a huge test for the questioner to choose.
And the reaction of everyone in the audience was even more intense—
"Can this be called a question?"
"It doesn't know me, and I don't know it, thank you."
"What are quasi-crystals?"
"Quasicrystal."
"What is that?"
"Who knows? We haven't studied subdivision physics."
Someone shook his head: "This is not the scope of discussion in the field of physics."
"Huh? What does that mean?"
"quasi-crystals is a crystal structure. The arrangement of atoms in the quasi-crystal is not symmetrically arranged according to the repeated periodicity. The arrangement of atoms is between crystal and non-crystal. The person who discovered it is Daniel Sheikh Terman, who won the Nobel Prize in Chemistry in 2011."
"Oh, that's it... Wait! What Nobel Prize are you talking about?"
"Chemistry Award."
"My God, shouldn't it be a physics award?!"
"No. That's why I said that quasi-crystals are not part of the discussion in the field of physics."
But it happened to appear in the IPhO test questions!
Also discuss physics!
Huo Fanjin hadn't finished the first question yet, but listening to the constant discussions and exclamations from around her, she still couldn't help but distractedly glanced at the projection cloth.
With just one glance, he froze on the spot.
If the first and second questions are still within her ability, it just takes a little more time to solve them smoothly, then the third question is no different from a bible for her.
The bewilderment in her eyes was no less than those of the people watching the fun in the audience.
At this time, she was suddenly very curious about Jiang Fuyue's reaction, was he as bewildered as herself, or was she frowning and thinking hard about solving the problem
Thinking so in his heart, Huo Fanjin did look at her.
Jiang Fuyue, who had been standing still for a long time, suddenly moved, stood in front of a clean whiteboard, and wrote down a chemical formula with a marker in her hand—
Al57.0+xCu39.5-xRu3.5(x=0, 2.5, 5, 7.5, 10) and Al62.0Cu34.0+yRu4.0-y(y=0, 0.5, 1.5)[1]
"What is she doing?"
Someone in the audience asked Huo Fanjin's question.
Even Yan Zhenfeng couldn't help reminding her: "This is a physics competition!"
Jiang Fuyue turned a deaf ear...