Chapter 312

you 're right.

The detector is spraying water.

This is a special but not special water.

What is not special is that it is either a liquid rich in special substances or a spring simply 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 with good chemistry should remember.

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

At this density, the water appliance has extremely high material stability - its decomposition temperature is above 2000 degrees.

In addition, any student who has taken chemistry class should remember another sentence:

Chemical reaction is actually the breaking of old bonds and the formation of new bonds.

The H-O-H bond of water needs more than 450kj mol energy to break, which is higher than that of 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 there is a secondary bond - hydrogen bond, which is very important to chemistry and biology.

At four degrees Celsius.

The specific heat capacity of water is almost the highest of common substances, the surface tension is the highest except for metal liquids such as mercury, and the melting boiling point of molecules with the same molecular weight is the highest.

Therefore, in the environment of the heavenly palace, the common water in life has become the most suitable exploratory material.

The reason for the initial temperature of 88.3 is simple:

At the beginning, the temperature detector fed back the temperature information in the heavenly palace, with an average temperature of 62.1 degrees below zero.

Therefore, by calculating the trajectory and cooling effect, the console finally confirmed the most appropriate injection position, elevation angle and outlet water temperature of the detector.

Finally, there is the value of 88.3.

This makes the whole detection process have the highest stability in theory, even safer than lasers and so on.

The nozzle power of the detector is very sufficient. The special inverted port and pulse water outlet speed ensure that the water flow will not condense into ice in the air.

It looks like a pee in the wind, spitting water.

The current crossed a beautiful parabola in the air and finally fell on the gray boundary!

then......

WOW——

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

Before it freezes, it is absorbed by the chapped ground in an instant.

In the helicopter cabin.

Looking at the scene in front of us, the expressions of academicians Li Baian and pan Jianwei were at the same time.

Academician Pan's facial muscles trembled.

You can see it clearly in the picture.

The boundary originally seemed to be composed of a thick gray fog, which did not produce any macro deformation at the moment of contact with the water flow.

The water seemed to hit a solid mass of black smoke and then bounced back directly.

And from the splash jump position, the rebound strength of the boundary is much higher than that of the ordinary solid wall!

It's like you throw water at a person. With one hand, the person condenses the water in front of him, and then throws it back at you.

in other words.

Tiangong space has a clear boundary, and the outside is not a continuous and infinite void!

Previously, other straight men's experts had discussed it.

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 rules.

But for now, this possibility should be wrong.

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

Say it impolitely.

The value of this water jet is equivalent to the research and speculation of space physics in the past 15 years!

Because before that, whether at home or abroad. There are no examples for reference in all theoretical certification.

Also mentioned earlier.

At present, the physical world has three judgments about the universe:

Positive curvature, no curvature, negative curvature.

Say an easy to understand concept:

Positive curvature multiple rebound, no curvature conventional rebound, negative curvature no rebound, and even absorb matter.

Therefore, according to the flow experiment, another result can be judged:

Since the rebound of water flow is much more violent than normal, the Tiangong space conforms to the situation of positive curvature.

as everyone knows.

In Riemannian functions.

Negative curvature spreads the geodesic, and positive curvature tightens the geodesic.

in other words.

If the section curvature of a complete simply connected Riemannian manifold is not positive everywhere, it must be differential homeomorphic to RN.

Therefore, once the geodesic is tightened, the fluid will also tighten.

In other words

Tiangong space is a space of bundle!

This is the charm of physics.

It's also a bucket of water.

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

But thinking of this, Li Bai'an frowned:

"Strange, if the heavenly palace space is in a closed state, where is the momentum of the center of mass system?"

In Chinese language.

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

For example, there are various planets subordinate to the solar system. The physics department can be divided into various classes. Few human systems can be divided into a large number of readers.

The centroid system refers to a system composed of multiple centroids.

The conservation of momentum of the center of mass system without work by external forces is a theorem similar to some cosmic rules.

But now that the space fluid is converging, where does its momentum go when it converges?

Academician pan Jianwei thought and tentatively proposed a possibility. He just listened to him:

"Li Lao, from the current situation of space, can it be the two hypotheses that a spacecraft collides with interstellar dust?

That is, there is an unknown external force doing work, and the actual center of mass system is still a conserved state? "

It's an interesting hypothesis that spaceships collide with interstellar dust.

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

When the dust collides with the spacecraft, it is a completely inelastic collision, and there is a change in kinetic energy in the system - there is a part of heat dissipation.

Then the formula of energy conservation should be written as:

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

But when academician Pan said these words, Li Baian had not had time to say before.

He himself frowned first.

It's not that he thought the speculation was wrong and immediately reversed it on the spot.

But a strange feeling suddenly appeared in his heart.

This feeling is strange, like something stuck in my heart, but I can't catch it when I seriously catch it.

Uncomfortable.jpg.

Li Baian did not notice the abnormality of academician pan. After all, they are discussing the academic problem of momentum in the center of mass system:

"External force?

This is possible. This assumption is actually quite in line with the space of Tiangong, because Tiangong absorbs nitrogen every day to react to generate y particles, and the energy conversion may not be a closed loop. "

Then he paused and said:

"Xiao pan, let's continue the inspection. We'd better focus on the boundary and try to find out its nature.

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

Photon is a very common particle, which exists in every corner of life.

For example, when you turn off and open a small movie, countless photons shoot straight into your face like a loaded shell.

Photons belong to neutral particles, which have small fluctuations, and belong to special substances with macro, visible and micro magic.

The photon beam on the detector is mainly used to detect the superposition state of the boundary, which is somewhat similar to the quantum erasure of the double slit interference experiment.

It uses the polarization of photons and the principle of quantum entanglement.

Academician pan, they installed different media on the beam outlet, a total of four.

When a photon passes through the exit, its polarization will change due to the existence of the medium.

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

In this way, academician pan and them can collect certain information.

However, the preparation of photons took some time, so academician pan first looked at other information collected.

.........

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Note:

Seeing the news of restricting minors' games, I suddenly want to know how many minors there are among the readers of this book

Minors can leave a 1 here