"Riemannian geometry and Einstein's field equations?"

Chen Yu's eyes widened in disbelief, and a carp sat up from the bed.

"That's what she told me anyway." Shang Lu sat on the edge of his bed, was looking down and twisting the towel, the hot water was dripping into the basin, he looked at the basin under him in a daze, and sighed faintly for a while: "Pendulum, do you say that this is my inescapable fate?" Why was no one ever told me before I came? After graduation, I will study general relativity......"

"Little Chief Engineer, you are a top student." Chen Yu comforted him, "You can handle it." ”

"Did you study Guangxiang when you were in college?" Shang Lu tilted his head, and his tone was fierce.

"I didn't ...... No. Chen Yu said, "If we don't learn this, it will sound very scary." ”

"It's even more scary to learn, not many people can be proficient in this thing, and Mr. Ji doesn't understand it, he's in engineering, not theoretical physics, fuck...... Why should he want me to learn something he doesn't know himself? When I first took the foundation of Guangxiang theory, a tensor analysis tortured me to death. Shang Lu put the towel on the head of the bed, took off his stinking socks and stuffed them into his shoes, then fell back, leaned on the soft pillow, and stared straight at the ceiling with his eyes, "Swing, you definitely don't know what the drivers of those giant machines are doing, this is too fucked." ”

"How fucked up?"

"Very, very fucked."

"That little chief engineer, you are auspicious and seek blessings for yourself."

Chen Yu's eyes turned pitying.

"On the battlefield against angels, it's useless to be just a pilot." Shang Lu said quietly, "You have to be a mathematician and a physicist. ”

Shang Lu's impression of giant machinery has been completely subverted and reversed today, and he realized that compared with combat weapons, giant machines are more similar to a powerful and sophisticated gravitational detector and supercomputer, and compared with aircraft, tanks, artillery, warships, giant machines are closer to large hadron colliders or high-energy particle accelerators in terms of blood relationship. Shen Jiang is right, Honglian is a giant physicist, she needs to think about difficult and complex physical problems on the battlefield, and immediately make analysis and calculations, which is the basis for effectively fighting four-dimensional monsters like angels, but how is this possible?

How could there be such a war in the history of mankind?

A soldier with a gun would have to analyze the Dirac equation, perform the Lorentz transform, or some other messy physical law on a battlefield full of artillery to find a target, which sounds like building an army of Bohr, Dirac, Riemann, Hilbert, Minkowski, Feynman, and Einstein.

But his grandmother's, they really found it.

This is probably the most demanding and difficult selection criterion ever found in human history, and it requires the driver to be proficient in numerical relativity while learning to operate a giant machine to fight angels.

"Fuck—"

Shang Lu covered his face and sighed.

No one can understand what this means better than Shang Lu - Einstein's field equation is the core of general relativity, a formula that describes the changes in space and gravity, arguably the most complex system of equations in human history, the founder Einstein himself was unable to solve it, it is so complex that it is almost impossible to find a general and exact solution, but the driver of the giant machine needs to analyze and solve it in the face of angels! Using the powerful computing power of a supercomputer to violently solve the Einstein field equations and obtain an approximate solution, this is the core task of the giant machine driver in combat.

It is equivalent to solving an extremely complex system of second-order nonlinear partial differential equations in a flight that is about to crash, and the time is urgent, and everything is fine, and the failure is the end of mankind.

This requires that the driver must be a genius in mathematics and physics, with far more in-depth research and sensitivity in the field of general relativity, and even mental arithmetic partial differential equations, Shen Jiang said that there may be one in 100,000 such geniuses.

"What a fucking pervert."

Shang Lu muttered.

Shin Kang is such a pervert.

I really can't see that the young girl of twenty-seven or eighteen years old is actually the top expert in numerical relativity in the human world.

Old man Ji lived a lot of age to Staff Officer Huang (Staff Officer Huang is a Chinese pastoral dog raised by Old Man Ji).

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"What is this? Where is the summation symbol? Oh yes, it's the Einstein summation symbol...... Tensor condensation? How did you shrink? ”

Shang Lu chattered, flipped through a large stack of photocopied handouts in his hand, Chen Yu went out with a basin and poured water, he was left alone in the dormitory, everyone in the 151 base had their own jobs and combat positions, but no one was as special as Shang Lu, he felt that the difficulty of his work was definitely not at the same level as others, at least the staff of the headquarters, the officers of the Political Department, the assistants of the Equipment Department and the Logistics Department, and all the workers did not need to learn how to maintain the giant machinery after work, let alone Riemannian geometry and general relativity.

Except for the driver of the giant machine.

Old man Ji really looks up to himself.

"Tensor analysis, die!" Shang Lu viciously smashed a large stack of A4 paper on the bed, "I won't study anymore!" I'm not here to do this at 151! I don't fucking learn anymore! ”

"Little chief engineer, there is nothing difficult in the world, as long as you are willing to persevere." Chen Yu came in with a basin and slippers, and closed the door with his hand, "Even if it's math-"

"Then you learn." Shang Lu stretched out his hand.

"It's not that I don't want to learn, it's just that there was once a famous successful predecessor ......who taught him," Chen Yu said, "Study, learn a fart." ”

"Let Mr. Ji ask another master, I really don't understand this thing, what kind of engineering and theory, you have to grasp it with both hands, and you have to be hard with both hands? He couldn't figure it out himself. Shang Lu said, "From tomorrow onwards, I will follow the chief of business, and I would rather help him design a coal-fired aviation ......."

Before the words fell, outside the window, "Bang!" There was a muffled thud.

There was silence in the courtyard, and a few seconds later someone in the next building shouted:

"Business ——!"

"Nothing! Nothing to do! The business chief shouted, "Add a little more pulverized coal!" Minor issues——! ”

Shang Lu sighed and lay down on the bed.

"The great Albert Einstein gave us a powerful weapon, but it was so difficult to operate that few people in the world could master."

If it is placed in the fantasy worldview, it is the ultimate magic left by the ancient supreme mages against demons, it is the only way to penetrate the demon's disguise, but this set of magic rules is so difficult that it is difficult for the wisdom of the poor human to master.

Shang Lu thought about Shen Jiang again, she was the genius warrior who had mastered this ultimate magic, so she had to drive a giant machine against the angels.

Sounds heroic.

But few people know that these heroes are facing complex gravitational analysis and equation solving in the cockpit of giant machines, and the routine of sad and angry memories of relatives yelling at a small cosmic explosion and killing in common stories will not work here, because you are facing mathematics, and mathematics will not be able to.

"Where's the Lighthouse Angel?" Shang Lu turned around and asked.

"It's still slowly approaching, and we expect to cross the second level of contact buffer in the next three days to a week, and the details will not be known until tomorrow morning's shift meeting." Chen Yu leaned on the head of the bed and stretched out his hand towards Shang Lu, "Come and let me see that thing." ”

Shang Lu handed him the handout.

He glanced at it, ", I'm blind." ”

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Following.

Old man Ji commanded the crane to lift a large piece of overall hollow carved aluminum alloy frame, this is the frame of the shield, the frame is required to be light and strong, and the aluminum alloy can meet the requirements, as for the material of the shield surface, hafnium carbide ceramics, it has been sent for high-temperature ablation tests.

151 set up a rocket test bench on the campus of Chongqing University of Posts and Telecommunications, and put a solid-fuel rocket on the test bench, of course, the purpose is not to test the rocket engine, they want to test the long-term ablation performance of high-temperature resistant ceramics, the rocket engine spews out the tail flame temperature can reach 4,000 degrees Celsius, which is a suitable test method, and the five-carbide four-tantalum hafnium ceramic tile is lying under the nozzle of the rocket engine.

These people are so ruthless, they burn under the rocket.

Two hundred meters away, Shang Lu was wearing goggles and standing in a semi-underground bunker, looking at the test bench in the center of the playground from a distance.

"Ready for the test! This is Zero, all attention, count down to five seconds to ignition-"