Another world conquest manual

That's right.

It is water that the detector sprays.

This is a special but not special water.

What's not special is that it's either a liquid rich in special substances, or simply water from a mountain spring behind Qingcheng Mountain.

And say it's special.

The reason is that the instantaneous temperature of this water is 88.3 degrees.

Students who are good at chemistry should remember it.

General substances expand with heat and contract with cold, but water has a maximum density near 4 degrees Celsius.

At this density, water has extremely high material stability—its decomposition temperature is above 2,000 degrees.

In addition, students who have taken chemistry classes should remember another sentence:

Chemical reactions are actually the breaking of old bonds and the formation of new bonds.

The H-O-H bond of water requires more than 450kJ/mol energy to break, which is higher than the C-H bond.

H-O-H has a bond angle of 104.5 degrees, and the electron cloud is enriched in O atoms.

Therefore, water is a large polar molecule and has secondary bonds - hydrogen bonds - that are very important to chemistry and biology.

at four degrees Celsius.

Water has the highest specific heat capacity of almost all common substances, the highest surface tension except metallic liquids such as mercury, and the highest melting and boiling point among molecules of the same molecular weight.

Therefore, in the location and environment of Tiangong, water, which is common in daily life, has become the most suitable tentative choice.

The reason for the initial temperature 88.3 is simple:

The temperature detector fed back the temperature information in the Tiangong from the beginning, and the average temperature was minus 62.1 degrees.

Therefore, the main console finally confirmed the most suitable injection position, tilt angle and outlet water temperature of the detector by calculating the ballistics and cooling effect.

In the end, the value was 88.3.

This makes the entire detection process have the highest theoretical stability, even safer than lasers and the like.

The detector's nozzle is very powerful, and the special upward nozzle and pulse-type water outlet speed ensure that the water flow will not condense into ice in the air.

It looked like something that was peeing three feet in the wind, spraying water sizzlingly.

This water flow drew a beautiful parabola in the air, and finally fell on the gray border!

Then

Crash--

All the water bounced back and splashed onto the dry surface.

Before it could freeze, it was instantly absorbed by the cracked ground.

Inside the helicopter cabin.

Looking at the scene happening in front of them, Academician Li Baian and Pan Jianwei's expressions became solemn at the same time.

The muscles on Academician Pan's face couldn't help but tremble.

It can be seen clearly in the picture.

The boundary that originally seemed to be composed of a thick gray mist did not undergo any macroscopic deformation at the moment of contact with the water flow.

The water flow looked like it hit a solid black smoke and then bounced right back.

And judging from the position of the splash, the rebound force of the boundary is much higher than that of an ordinary solid wall!

It's like when you splash water on someone, that person condenses the water in front of you with a wave of one hand, and then splashes it back on you.

That is to say.

The heavenly space has clear boundaries, and the outside is not a continuous and infinite void!

Experts from other straight men’s groups have discussed this before.

Some experts believe that the boundary of the Heavenly Palace is impassable, but it is composed of a large number of void organizations, which may be related to some kind of rules.

But right now, that possibility seems to be wrong.

There is no doubt that this is a valuable discovery for existing space theory.

Said without politeness.

The value of this jet of water is worth the research and speculation of space physics in the past fifteen years!

Because before that, whether it was local or foreign. All theoretical certifications do not have practical examples for reference.

At the same time, it was mentioned earlier.

At present, there are three judgments about the universe in the physics community:

Positive curvature, no curvature, negative curvature.

Let’s talk about an easy-to-understand concept:

Positive curvature multiple rebound, no curvature normal rebound, negative curvature no rebound even absorbs matter.

Therefore, based on the water flow experiment, another result can be determined at present:

Because the water flow rebounds much more violently than normal, the Tiangong space conforms to a positive curvature situation.

As everyone knows.

in the Riemann function.

Negative curvature causes the geodesics to spread out, while positive curvature causes the geodesics to tighten.

That is to say.

If the cross-section curvature of a complete simply connected Riemannian manifold is non-positive everywhere, then it must be diffeomorphic to Rn.

So once the geodesic tightens, so does the fluid.

In other words.

The Heavenly Palace space is a binding space!

This is the beauty of physics.

The same is a bucket of water.

Ordinary people can only use it to wash their faces, writers can use it for hydrology, but physicists can use it to break through barriers!

But thinking of this, Li Baian couldn't help but frowned:

"It's strange. If the Tiangong space is in a convergent state, then where does the momentum of the center of mass system go?"

In Chinese terms.

The meaning of the word department generally represents a collection of various combinations, which can be subdivided into multiple subsets below.

For example, there are various planets under the solar system, the physics department can be divided into various classes, and the rare human department can be divided into a large number of readers.

The center-of-mass system refers to a system composed of multiple centers of mass.

Momentum is conserved in the center of mass system when external forces do no work. This is a theorem similar to some kind of cosmic rule.

But now the space fluid is converging, so where does the momentum go when it is converging?

Academician Pan Jianwei on the side thought for a while and tentatively proposed a possibility. He only heard him say:

"Mr. Li, judging from the current situation in space, are there two hypotheses that the spacecraft collided with interstellar dust?

In other words, there is some unknown external force doing work, but the actual center of mass system is still in a conserved state? "

It is an interesting hypothesis that a spacecraft collides with interstellar dust.

Under this assumption, the dust part has no initial kinetic energy and the spacecraft travels in space.

When dust hits the spacecraft, it is a completely inelastic collision, and there is a kinetic energy change inside the system - there is some heat dissipation.

Then the formula for conservation of energy should be written as:

External work = overall kinetic energy change + internal heat dissipation.

But when Academician Pan finished speaking, Li Baian had not had time to say anything.

He couldn't help but frown at first.

It's not that he felt that this speculation was wrong and immediately overturned it on the spot.

Instead, a strange feeling suddenly appeared in his heart.

This feeling is indescribably weird, like something is stuck in my heart, but when I try to grab it seriously, I can't catch it.

Uncomfortable.jpg.

Li Baian on the side did not notice the abnormality of Academician Pan. After all, they were discussing the academic issue of momentum in the center of mass system:

"External force?

This is possible. This hypothesis is actually quite consistent with the Tiangong space, because Tiangong absorbs nitrogen every day and reacts to generate Y particles, and the energy conversion may not be a closed loop. "

Then he paused and said:

"Xiao Pan, let's continue testing, let's focus on the boundary, and try to figure out more about its nature.

Now that we have determined that it is a positive curvature situation, we can be bolder this time and try using photons and excited state particles. "

Photons are very common particles that exist in every corner of life.

For example, every time you turn on a short movie, countless photons shoot straight into your face like outgoing cannonballs.

Photons are neutral particles, possessing tiny fluctuations of their own, and are special substances that are visible at the macroscopic level and magical at the microscopic level.

The photon beam on the detector this time is mainly to detect the superposition state of the boundary, and its properties are somewhat similar to the quantum erasure of the double-slit interference experiment.

It takes advantage of the polarization of photons and the principle of quantum entanglement.

Academician Pan and the others installed different media on the exit end of the beam, a total of four types.

When a photon passes through the exit, its polarization changes due to the presence of the medium.

If this photon is in a quantum entanglement state with a photon on the boundary or even outside the boundary, the state of the corresponding photon will also change accordingly.

In this way, Academician Pan and the others can collect certain information.

However, the preparation of photons takes a certain amount of time, so Academician Pan and the others first looked at other collected information.

Note:

After seeing the news about restrictions on games for minors, I suddenly wanted to know how many readers of this book are underage.

Minors can leave a 1 here

My speed has dropped to 1,600 an hour. It took me almost ten hours to code more than 5,000 words today.

I'll take a nap first. I don't have to wait for the update tonight. It may be posted tomorrow. My current biological clock is really weird. I said I would wake up at 3 or 4 in the afternoon and then wake up at 12. I sleep for six hours at a time and feel groggy.

By the way, I would like to recommend a book, "Start: A Plane of the Republic of China" by Lao Long Ju. It's super good-looking. If it's not a high-quality product, I won't recommend it.