Chapter 260: Tit for Tat

Because Ma Tian read too fast, others also unknowingly speeded up their reading.

Another hour later, other people finally expressed their views one after another that they had finished watching.

Bekier Cobb paused his voice and said, "If you have any questions, you can ask them."

He was already prepared for Ma Tian, ​​Halls and others to launch attacks on Musk. Similarly, they are also ready to attack Hua Shuwen's materials.

The main problem here is that Yingjiang and Rabbit are not willing to deal with it. People from other countries will naturally not speak first.

Ma Tian saw that the audience was silent, but he was the first to speak: "I found some problems with Musk's materials."

As soon as he spoke, the whole audience looked over, and Halls raised the corners of his face and mouth, ready to watch the show.

"I found three problems here:

First, there is a deviation in the calculation of satellite orbit coordinates. Although I did not look at all of the thousands of satellite coordinates Musk applied for in the second phase of materials because of limited time, I could tell at a glance that there was something wrong with the coordinates of satellites 112, 116, and 134.

I scanned about 200 coordinates, and based on probability calculation, at least 90 of the data Musk applied for this time were wrong..."

"It's impossible. We have rigorously calculated this data coordinate."

When he heard that there were 90 errors, Bekier Cobb couldn't help but interrupt. Aerospace and aviation cannot tolerate such a high error rate. He also didn't believe that his countrymen were so low-level and made such outrageous mistakes.

"Listen to what I have to say before you speak. When I finish speaking, I will naturally verify them one by one." Ma Tian refuted mercilessly. As the chairman of the alliance, Bekier Cobb interrupts others when they are speaking. Don’t you even know it’s rude?

Bekir Cobb looked ugly, but he still shut up. Ma Tian continued:

"Second, the experimental data is too ideal. He specified in the launch parameters that the Starlink satellite will operate in a phased manner in a low-Earth orbit at an altitude of 550 kilometers. This model is too ideal and does not take many factors into consideration. I seriously doubt that this model is Made by a guy who failed math..."

As soon as Ma Tian opened his mouth, he explained in detail the three problems he had discovered. Although Ma Tian tried his best not to curse, when he saw some mistakes, he would still be like a teacher who saw a student write a bunch of Xiang. With sternness and sarcasm.

This means that Musk was not present at the scene. He must have put on a stinky face and exchanged insults with Ma Tian.

Bekir Cobb also had an ugly face as he listened to Ma Tian continue talking. From his position, he naturally suspected that Ma Tian was forcefully finding mistakes and talking nonsense.

He wanted to see what arguments Ma Tian came up with later.

Naturally, Ma Tian would not disappoint him. After he finished speaking the three questions, Ma Tian began to demonstrate on the spot.

“For the first coordinate problem, let’s look directly at the derivation of the formula. Although Musk’s material omits this step, based on the results, I can probably reverse his formula:

N0 = GM^1/2 A^2/3

N = N0 +^N

…

"

Ma Tian's eyes became serious. As the most powerful brain modified by the system, he began to list Musk's formulas step by step on the shared screen.

Bekier Cobb, Halls and others' eyes widened immediately. They were not bad at mathematics, which did not prevent them from being shocked that Ma Tian could list those very complicated formulas one by one.

Damn it, you have to know that this is a formula with one mathematical ring within another, there are quite a lot of them!

Moreover, Ma Tian deduces backwards. During the derivation process, complex number substitution formulas can be calculated in seconds. What kind of mental arithmetic ability is this?

If they hadn't known that Ma Tian had seen these materials for the first time, they would have suspected that Ma Tian had read the materials in advance and made preparations.

Not to mention them, even Zhai Xizhong, a big boss in the country who knew Ma Tian well, his eyes widened.

He had seen in the files that Ma Tianneng had a photographic memory and a super memory, but he didn't tell him that Ma Tianneng could make such unreasonable deductions. This not only required being very familiar with these formulas or fields, but also having super strength. mathematical sensitivity and logical reasoning ability.

Ma Tian eloquently listed more than 50 formulas, and began to bring Musk's satellite coordinate data into the demonstration on the spot, and then the first data was successfully certified!

Bekir Cobb had to interrupt and said: "Mr. Ma Tian, ​​wait a minute, I will try to use your formula to plug in the data."

Ma Tian moved too fast, he had to verify it himself before he believed it.

Hearing this, Ma Tian just nodded without refusing, he was so confident.

Bekier Cobb began to copy formulas and calculations, and others were also idle, such as Halls and Honda Nanosuke began to calculate on their own.

Half an hour later, Bekier Cobb looked at Ma Tian's formula in despair and collapsed in his seat.

Honda Nanosuke from the island country also twitched his beard, showing his great shock.

All he needed was the curse "Baga".

Only Halls might have a better reaction. He just looked at Ma Tian in shock. He didn't expect that there was such a person in the world.

If he hadn't seen it with his own eyes, he would never have believed it.

Becky Cobb went to Musk's side unbelievingly and sent Ma Tian's formula to them, asking them to confirm it quickly.

"How's it going? Is there any problem?" Ma Tian calmly took a sip of tea and asked.

The atmosphere was very silent. Everyone in the Eagle Camp looked at Bekiel Cobb and asked him to speak.

"Mr. Ma Tian, ​​I'll go to Musk to confirm it. You should take it as correct and continue." Becker Cobb said.

"Okay, since these formulas are correct, I will find the errors based on these formulas!

You can see the 8th formula I listed on the screen. At first glance, it is just a simple satellite orbit formula, which uses the evolution formula written by Kepler's law.

But the formula here obviously does not take into account the influence of the moon's movement to here on the satellite's gravity. Even if the moon moves behind the earth at this time, Musk should also take the influence of the moon into account..."

"Mr. Ma Tian, ​​the influence of the moon should be negligible, right? After all, it is only 0.000001 times the acceleration of the earth." Becker Cobb interrupted.

"Is the impact of 0.000001 times acceleration small?" Ma Tian retorted, "1 micron is 1,000 times that of 1 nanometer. Whether the impact is small or not needs to be fully considered. For example, if Musk continues to deduce the formula, the following 47 formulas will be affected by the data of this formula and produce certain deviations.

The most obvious is the deviation of the low-orbit satellite launched near the equator. The diameter of the earth is considered here, so I said that there is a problem with the coordinates of the 112th, 116th, and 134th satellites. Those satellites were launched into orbits above the equator. The accurate data should be

GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84", 6378137, 298.257223563, AUTHORITY["EPSG", "7030"]], AUTHORITY["EPSG", "632EM["Greenwich", 0, AUTHORITY["EPSG", "8901"]], UNIT["degree", 0.0174532925199433, AUTHORITY["EPSG", "9122"]], AUTHORITY["EPSG", "4326"]]......

(These coordinates are not made up by the author, but the real WGS84 coordinate system, using OGT WKT description. This is generally the coordinate system used by Google, while Tencent and Qude Map use the GCJ02 coordinate system, but it is basically this complicated. )

Ma Tian dictated the three complex coordinate systems. If it weren't for Tianji's thoughtful subtitle display, a group of foreigners might not be able to remember such a long data.

Zhai Xizhong looked at the subtitles with shining eyes. He suddenly felt that the subtitles made by Ma Tian were very advanced. Such real-time translation is a very powerful software for translation software.

Bekier Cobb found that his brain was not enough. Why did he feel like he was listening to a professor's lecture in college, and he felt a little bit tired and couldn't keep up. Why could Ma Tian come up with such complex numbers at will? Is he sure he wasn't talking nonsense?

He could only take notes like he did in his student days, and prepare to tell Musk about this and let him go Verify it.

Thinking of this, he felt a little happier. If Ma Tian was right, they could avoid the failure of satellite launch in advance and save costs.

Would Ma Tian be so kind? Of course not!

After talking about the satellite coordinate data, Ma Tian looked at the people watching him in the audience, and was too lazy to explain in detail, and continued to talk about the problem:

"Not only is the 8th formula wrong, but also the 23rd and 37th formulas. In my opinion, the engineers who wrote these formulas are too imprecise. Can the model equation of the ionosphere be listed so simply...

There is also this experimental data model. The model is established in a completely idealized situation, and the data obtained is also very ideal. Although there is no problem in the sky, the ability to withstand interference and accuracy will be greatly reduced. It is very likely that the launch will fail due to large deviations due to factors such as wind direction and ionosphere!

For example, here, if we add a 12-level wind speed disturbance of 32.4m/s, the angular dynamic vector will begin to change to 3.782kg*m^2/s, and the corresponding moment of inertia will become 2.8913..."

Ma Tian argued the problem eloquently, and later asked Tianji to cut a small split screen on the scene and simply simulated an animation to demonstrate the data formula.

This operation made the pupils of others shrink again, and they stared at the demonstration video on the computer screen. They didn't know how Ma Tian did it, and what kind of modeling demonstration technology was used here.

They vaguely guessed that it was related to artificial intelligence, but they didn't dare to delve into it. After all, they were not experts in this area. Moreover, this level of intelligence is a bit shocking, far from the artificial intelligence they usually know.

The whole meeting turned into Ma Tian's personal show. The 11 major professional members of the Telecommunications Union listened carefully in front of the computer screen like students. As for whether they understood it or not, they had to ask them.

Anyway, Becker Cobb would never admit that he didn't understand it later. He is a senior professor from MIT with a double doctorate in mathematics and physics. He can still understand what Ma Tian said, but Ma Tian spoke in Chinese, which was difficult for him to understand.

Becker Cobb was looking for an excuse when Musk's chat avatar began to flash. There was a message.

He couldn't help but be absent-minded and read Musk's message on another computer:

[Musk: Mr. Cobb, where did you get our experimental formula? These formulas are more simplified, but the final results are exactly the same as ours! ]

Looking at Musk's message, Becker Cobb's pupils shrank, and he took a deep look at Ma Tian who was still talking about the problem. For the first time, he felt incredible about a person.

Is there really such a powerful person in the world?

"These are the three main problems I found. Of course, there are some minor problems that I am too lazy to describe. In short, in my opinion, Musk's materials are completely unacceptable, and I don't know how you passed it?"

Ma Tian spoke for more than an hour before concluding with the last sentence. The last rhetorical question can be said to be a naked slap in Becker Cobb's face.

After saying that, Ma Tian also looked at Becker Cobb. However, Becker Cobb did not get angry as he expected. Instead, he sat in his seat in a daze. When he saw that Ma Tian had finished speaking, he came back to his senses and asked in a daze: "Are you done?"

Ma Tian drank a sip of tea for himself and soon realized that Becker Cobb was just wandering in his mind. It was very similar to himself in his previous life when he was a slacker listening to the professor's "Mathematical Physics Methods" course. On the surface, he was listening carefully, but secretly he was thinking about whether to eat braised chicken or cross-bridge rice noodles for lunch.

"Yes, I'm done. I believe that Mr. Cobb has understood the three questions I just mentioned. Do you still think Musk's materials can pass the review?" Ma Tian organized his words and said. He would not give face to Musk or anyone present except Zhai Xizhong.

"Uh..." Becker Cobb was silent. He didn't know what to say. Ma Tian almost gave out in front of him, which made him a little embarrassed. He couldn't admit in front of everyone that he was careless at the time.

And even if he was wrong, Musk must be right from his standpoint.

"Mr. Ma Tian, ​​this matter has been approved, and the Telecommunications Union has no precedent of retracting the review at that time!" Becker Cobb said expressionlessly.

"Then you saw a mistake and let him continue?" Ma Tian asked, not letting go of this topic.

"I will pass your opinion to them for another check!"

Becker Cobb has made up his mind to insist that Musk's materials are approved, and this shameless look also made Ma Tian stunned.

He has rarely experienced such things, and he didn't expect there would be such a shameless person.

After all, he has seen less of the world. He is usually spoiled by many big guys like Wang Chenbo and Hua Shuwen, and has not experienced such filth.

"So it's just a light check to make up for it? What if I didn't come to the meeting this time?" Ma Tian's face also turned cold. He had to admit that the International Telecommunication Union still played a lot of positive roles in the development of telecommunications on the earth, including the domain name specification of local area networks and Internet security.

But if it has become a group of Eagle Sauce interests, then don't blame Ma Tian for not recognizing it.

Becker Cobb was questioned by Ma Tian, ​​and his face completely collapsed. He didn't expect Ma Tian to be so unreasonable and not give him face.

"Then what do you want?" His voice also turned cold.

"Musk's application materials must be sent back for re-examination, and all the satellite coordinates set in his materials are invalid!"

The meeting suddenly became full of gunpowder, and the tit-for-tat was sharp!