Basic knowledge: high school mathematics knowledge and a basic understanding of the law of gravitation; It is recommended to have a basic understanding of special relativity.

——

In short, as long as there are sunspots, it is absolutely impossible for other hornets to hurt An Chen. The beta female Black Hawk is the largest wasp on average size on the planet, and the Palace Bee's Black Hawk Hornet is the best of the breed.

But escaping a catastrophe does not mean that he is at ease, Ji Wanxing still asked hesitantly: "That...... It's illegal to steal royal jelly, right? ”

"Hey, the people don't hold officials accountable." An Chen hid the glass bottle containing the "illegal object" back into the pocket of his casual pants, and looked up to see Yan Qilan rushing here.

"What's wrong?" Yan Qilan saw An Chen, raised her hand and gave her a head hammer, "Why are you again, An Chen?" ”

"I'll get some royal jelly." An Chen rubbed the red mark on his forehead and grinned.

"You still squeeze food from the mouths of other people's larvae, are you lacking in virtue?" Yan Qilan asked a little annoyed, "The royal jelly of jasper smells of cornstarch, the quality is not good at all, and you can't refine royal jelly if you mix honey." If you really want to eat royal balm, why don't you go to Marina? ”

"Anyway, I'm going to find Marina." An Chen put his hand on Yan Qilan's shoulder, "Do you remember when I said 'extraterrestrial time difference effect'?" The data of the time difference have all been sorted out, and it was Comrade Ji Wanxing who did it. ”

"Oh, I'm glad I will." Yan Qilan shook hands with the young girl next to her who wore round glasses and looked like a "geek".

"This fitting curve may have something to do with gravity, so I went to the Marina construction equation." An Chen then added.

"That's good, did you tell Mingsi about this?" Yan Qilan asked.

"Oh, not yet...... Mingsi did not believe in any time difference, alas, blinded by Newtonian mechanics. An Chen shrugged his shoulders and spread his hands.

"Why, what kind of physicist are you still a Marina girl?" Yan Qilan said a little disapprovingly, "I think it's good that she can still remember the gravitational formula." ”

Ji Wanxing nodded reflexively, obviously disagreeing with Marina's professionalism in her heart.

However, An Chen only shrugged his shoulders: "The use of mathematical skills does not necessarily have to be related to the foundation of physics. Anyway, even if it doesn't make practical sense, the equation can be used. ”

She pulled Ji Wanxing and walked away happily, which made Yan Qilan feel that her junior sister, who mainly studied general education courses in college, was really a "science fiction" with a head.

For anyone who has a serious background in physics, they will 100% believe that physics is an experimental science after all, and it is not possible to make up mathematical equations. It is hard to imagine that a person like An Chen, who "plays" academics, can become the boss of the Emperor Sky Shield Group, but this is the case.

——

Sure enough, Marina constructed equations that mathematically matched the curve of the time difference, and even made some new "discoveries" as a result.

The process took Marina almost an entire working day. It wasn't until An Chen left the satellite general control room to go to see Luo Qingye's situation that Marina sent a message to tell her that the equation had been constructed.

An Chen looked back at the control room and saw that Ji Wanxing's seat was empty, probably because he had already gone to dinner by himself. She messaged Marina back, "Coming soon." ”

Marina was still in the 3D screening room, spending the whole noon and afternoon snuggling up on the couch in the screening room and counting the things in her hand, as if she were obsessed with complex puzzles. And when she saw An Chen, she happily handed over the display screen: "Sister An Chen, you see I have constructed it!" ”

An Chen took it and looked at it, and was a little surprised to find that this equation really looked like that.

T=(1-2GM/rx^2-v^2/x^2)^1/2*t

Among them is the gravitational constant G, the mass of the earth M, the satellite velocity v, and the orbital radius r...... Basically, everything that is known is in it.

"What's this 'x'?" An Chen asked.

"Oh, x is a constant." Marina poked at the edge of the screen and popped up her calculations, "This constant is particularly interesting, the value is about 3×10^8, and the dimension is s^-1×m^1. I thought it was redundancy, but I didn't expect you to guess what? I searched the internet and there really is such a constant—"

"Isn't this the speed of light?" An Chen looked at her with some amusement, "Why, Marina, don't you know the speed of light?" ”

"The speed of light, yes, the speed of light. Is this constant famous? Marina said innocently, "I didn't think I could use it much in life, after all, the speed of light is too fast." In comparison, the speed of sound should be a little bit more, right? ”

"The speed of sound is the speed of sound, and the speed of light is the speed of light." An Chen smiled and shook his head, "But it's normal that you don't know." The concept of the speed of light is only commonly used in astronomy, because other stars are too far away from the solar system to be expressed in terms of angular parallax, and sometimes in 'light years'. A light year is the distance traveled by a year. ”

"3×10^8m/s, go for a year? That's too far, isn't it? Marina asked, skeptically.

"That's not that far in the universe." An Chen said with a smile, "You go and ask Mingsi, we are so close to us a light year, but there is not even a star." Most of the space in the universe lacks matter, and people call it 'space'. ”

Marina looked at Anchen with her cheeks crossed, not very interested in how empty the universe really was. Even if Her Excellency Michelin Lyubov felt that Marina was not doing her job, it would not change the fact that she was born more concerned about people and land. Peng Mingsi is engaged in aerospace to see the universe, while Marina has developed a satellite to better observe the earth.

Speaking of Pennish, she couldn't help but inform the real astronomer on their team about the equation that Marina had calculated.

An Chen sent a voice request to Peng Mingsi through the remote voice, and it didn't take long for the other side to connect: "An Chen? ”

"Hey, Mingsi, do you remember what I said about the extraterrestrial time difference effect?" An Chen asked him first.

"Remember...... Get. Peng Mingsi asked a little puzzled, "Why, do you still think that the time difference does exist?" ”

"Of course there is, and Marina has constructed an equation to describe this phenomenon." An Chen unconsciously brought a triumphant tone.

"Marina? What does Marina know......" Peng Mingsi muttered, "Okay, where are you?" Shall I go to you, or will you send me the equation? ”

"You can understand this equation if I read it directly." An Chen read into Marina's notes, "The main thing is a coefficient, there is a difference between satellite time and ground time. This coefficient is the root number, 1 minus 2GM divided by rc, minus v divided by c. ”

"It's that simple, isn't it just fitting a curve?" Peng Mingsi commented indifferently.

"No, no, no, it's not a fitting curve." Anchen explained, "If you fit a curve, you will deliberately fit it in the form of a quadratic polynomial under the root number? In fact, the fitting curve calculated by Comrade Wan Xing in our group is a quadratic polynomial, which happens to be an approximation of the Taylor expansion of this equation. ”

"Okay, not fitting a curve, but what's the physical significance of that?" Peng Mingsi asked, "GM divided by square c, isn't this just to make up the order of magnitude?" ”

Anchen was asked, in fact, this is what Marina made up in order to make up an order of magnitude. However, even if it has no physical significance, it still does not prevent her from recognizing the results of Marina's "research": "If you make it up, you can make it up, and you can use it anyway." ”