Basics: It is recommended to have basic concepts about special relativity.

——

Luo Qingye was inexplicably angry all the way.

He didn't know why, obviously he was going to replace Young Master Greco Chino to participate in the selection of the head of the Kozhidu family, and he would definitely not have anything to do with An Chen, but he would still feel angry when he heard that An Chen had a boyfriend. However, if it is because An Chen concealed the fact that she had a boyfriend at the beginning and flirted with her, it seems that it is not possible, after all, An Chen did not say anything to him beyond the boundaries of ordinary friends, and there is obviously no need to tell each other about his emotional condition for new ordinary friends.

Luo Qingye thought about it, but couldn't help but whisper to An Chen: "An Chen, are you really ...... with Young Master Qin Xiao?"

"Hey, that's all fun." An Chen replied with a smile, "Ah Xiao is Ah Sheng's younger brother, and the rabbit doesn't eat the grass next to the nest." ”

This made Luo Qingye's heart balance a little, and he secretly felt that this was the right way.

Although An Chen is also a rich second generation, she is a farmer in the collection farm, and the people she interacts with are also from the working class. And that Young Master Qin Xiao is obviously a rich man who is really in the upper class circle.

——

The two hornets followed the route marked by the navigation beacon and flew over Tianshui Town and arrived at the park where the headquarters of the Imperial Sky Shield was located.

While in the air, they landed just in time for the fixed-wing aircraft at the Aegis headquarters. From a distance, the gray thing flew lightly, slid like a piece of paper down the runway on the roof of the headquarters, came to a halt, and then turned back to its seat.

"Is that the 'plane' you made?" Luo Qingye asked curiously. He also heard Jace talk about the Sky Shield Group yesterday, and knew that the aviation part was mainly studying intra-atmosphere vehicles.

"That's an agricultural drone, much smaller than a manned aircraft." "Our main large aircraft research center is not here, and we only have drones here at the headquarters, which are used to patrol the vineyards. ”

"How fast can they fly?" Luo Qingye asked.

"These little things, the normal cruising speed is about 300 kilometers per hour. And those big guys with a load of dozens of tons can have a cruising speed of seven or eight hundred kilometers. Anchen replied, "I don't learn this, but it's easy to understand it simply." The design of the wing according to the Kuta-Zhukovsky condition, L = ρVΓ, that is, the lift is equal to the air density multiplied by the velocity of the ring. For wings with similar rings, the higher the flow velocity, the greater the lift. ”

Luo Qingye listened to her say this, and didn't feel that this had anything to do with "easy". If nothing else, what exactly is "ring volume"?

However, before he could ask what the ring meant, Kuroko and Moonwind landed in the beestable area on the roof of the Imperial Sky Shield headquarters. An Chen jumped down from the back of Kuroko's chest, making Luo Qingye also fall to the ground.

"Hey, aren't you going to the cabin today?" Luo Qingye asked strangely.

"Let's go to the cabin, but leave Black Arrow and Moonwind here for breakfast first." Qin Xiao walked over to him and said, "It's okay, even if there is no hornet, it won't be far by taking the tram of the Emperor's Sky Shield Headquarters." ”

It was the first time Luo Qingye knew that An Chen's hornet was called "Black Arrow". He had thought it was called "Kuroko", and he thought that the name was a bit unserious for the Black Eagle Hornet.

"Well, you guys go, I won't go." An Chen waved his hand at them, "I'm on the 52nd floor of the satellite console, and if you have something to look for, I can go there right away." ”

Before Qin Xiao took the elevator to the ground, he deliberately took advantage of An Chen's inattention and leaned over to kiss her on the cheek.

An Chen was stunned by him, and he didn't expect this kid to have this kind of operation at all. She saw that Luo Qingye's expression was a little bad, but it didn't matter, anyway, Luo Qingye was going to participate in the selection of the head of the Koridu family, and An Chen originally planned to keep a normal distance from him.

——

Luo Qingye and Qin Xiao took the elevator directly to the ground and went down, and An Chen took the internal elevator to the 52nd floor, rarely becoming the last person to arrive in the satellite control group.

She slapped a cup of hot mint tea, added a spoonful of mead, and greeted passers-by as she stirred, and walked over to her desk and sat down. Turn on the display, and the equation that Marina calculated yesterday appears in the first item of the memo.

T=(1-2GM/rc^2-v^2/c^2)^1/2*t

It's a pretty pretty equation, but Anchen doesn't think he really understands it.

The square of the velocity v is equivalent to the reciprocal term of the orbital height r, so below the root number of this equation is still the first square of the reciprocal of the orbital altitude r, and the second quadratic of the reciprocal r.

But what is the significance of 1/c^2? This number is so small that it is only on the order of the order of E-17. Anchen originally thought that this was the parameter that Marina introduced to make up the order of magnitude, but it just happened to be the same as the order of magnitude 1/c^2, but judging from the degree of fitting of this curve to the actual curve, it seems that this is not just a constant to make up.

An Chen opened the browser and boarded the "green channel", first searching for several studies on the speed of light.

The "Green Channel" was originally established by the Institute of Biochemistry of the Imperial Academy of Sciences as an online academic library and search engine, which initially only included journals in biology, but soon became more popular and began to include literature from other disciplines.

A search for "speed of light" on the green channel yields more than a thousand pages of results. Anchen adjusted the arrangement from "best match" to "time recent", and you can see that the title of the article on the first page has changed a lot.

In the "best match" arrangement, the articles with the highest scores are very old texts, including the well-known gear method of measuring the speed of light. When it comes to the arrangement of "time recent", the word "speed of light" does not appear in most of the titles of the articles on the first page, and is replaced by some astrophysics and electromagnetism, which probably belongs to the domain of Peng Mingsi and Yan Qilan.

(Note: The design here refers to the Pubmed of NCBI, but Pubmed generally only includes journals in biology-related fields; Mainly because I haven't used Google Scholar or Web of Science for a long time, and there are too many professional classifications in the real world, and it is difficult to guarantee breadth and accuracy at the same time, so this article will be slightly simplified for the sake of logical clarity)

An Chen clicked on a few articles, and indeed didn't see anything related to the change in the flow of time. Thinking about it, Peng Mingsi, who is well-read in literature, does not agree with the view, and there is a high probability that it will not appear in mainstream journals.

But does this mean that Marina's parameters are just a coincidence? An Chen didn't think so, she stared at the equation for a while, and then calculated it casually.

If there is no term containing M, that is, there is no earth as a celestial body, then it is T=(1-v^2/c^2)^1/2*t. This equation looks even more bizarre, as if it thinks that the faster an object moves, the less time it will elapse. But since the speed of a normal object cannot reach the speed of light by order of magnitude, it is unlikely that the faster a person runs, the more inaccurate the watch will be.

Regardless of the actual situation, it is obvious that this equation has some kind of geometric significance.

(T/t)^2=1^2-v^2/c^2

It seemed to form some kind of conic curve, An Chen pulled out the display screen under the table and was about to calculate, when he suddenly heard footsteps behind him, and when he looked back, it was Ji Wanxing walking over.