That's right.

The probe is indeed spraying water.

It's a special yet not special kind of water.

The non-special part is that it isn't a liquid rich in special substances, it's simply spring water from a spring behind Qingcheng Mountain.

And why is it special?

It's because the instantaneous temperature of this water is 88.3 degrees.

Students proficient in chemistry should all remember.

Most substances expand when heated and contract when cooled, but water has its maximum density around four degrees Celsius.

At this density, water possesses extremely high material stability — its decomposition temperature is above 2000 degrees.

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

Chemical reactions are essentially the breaking of old bonds and the forming of new bonds.

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

The H-O-H bond angle is 104.5 degrees, with the electron cloud concentrating on the O atom.

Hence, water is a highly polar molecule, and it has secondary bonds—hydrogen bonds—that are very important to both chemistry and biology.

Under the condition of four degrees Celsius.

The specific heat capacity of water is nearly the highest of common substances, its surface tension is the highest except for metal liquids like mercury, and it has the highest melting and boiling points among molecules of the same molecular weight.

Therefore, in the environment of the Celestial Palace, the common water found in everyday life became the most suitable exploratory material.

The initial temperature of 88.3 is simply explained:

The temperature sensors promptly fed back the temperature information inside the Celestial Palace, with an average temperature of minus 62.1 degrees.

Thus, the main control center calculated the trajectory and cooling effects and ultimately confirmed the most suitable spray position, elevation angle, and water temperature for the probe.

That's how the number 88.3 came about.

This gave the entire probing process theoretically the highest stability, even more secure than lasers.

The probe's nozzle has sufficient power, and the special elevation and pulsed water speed ensure the water flow doesn't freeze mid-air.

It looks like that one thing spraying water, three zhang against the wind.

This stream of water traced a beautiful parabolic arc in mid-air, finally landing on the gray boundary!

And then...

Splash——

The water was entirely bounced back, splashing onto the dry surface.

Before it had a chance to freeze, it was instantly absorbed by the cracked ground.

Inside the helicopter cabin.

Witnessing this scene, Li Bai'an and Academician Pan Jianwei immediately grew solemn.

Academician Pan couldn't help but have his facial muscles twitch.

It was clearly visible on the screen.

The boundary, which initially looked like it was made of thick gray fog, didn't exhibit any macro deformation the instant it contacted the water.

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

Judging from the splash point, the rebound force from the boundary was much stronger than that of an ordinary solid wall!

It's like throwing water at a person, and they effortlessly deflect it back in front of them and splash it back at you.

In other words.

The Celestial Palace Space has a defined boundary, and the exterior isn't an endless void!

Experts from other groups had previously discussed it.

Some experts believed the boundary of the Celestial Palace to be impassable but made up of large amounts of void structures, possibly related to some sort of rule.

But now it seems, this possibility is incorrect.

Without a doubt, this is a highly valuable discovery for existing space theories.

Frankly speaking.

The value of this water jet is equivalent to fifteen years of speculative research in spatial physics!

Because before this, whether domestically or abroad, all theoretical verifications lacked real-world examples for reference.

As mentioned earlier.

Currently, the physics community has three judgments about the universe:

Positive curvature, no curvature, negative curvature.

To put it in simple terms:

Positive curvature experiences more vigorous bouncing back, no curvature bounces back as usual, and negative curvature doesn't bounce back and might even absorb matter.

Therefore, based on the water flow experiment, another conclusion can be drawn:

Since the rebound of the water flow is much more vigorous than usual, the Celestial Palace Space aligns with a positive curvature configuration.

As is well known.

In the Riemann function.

Negative curvature spreads geodesics apart, positive curvature pulls them together.

In other words.

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

Therefore, once geodesics are pulled together, fluid will also be drawn together.

In other words...

The Celestial Palace Space is a convergent space!

This is the charm of physics.

The same bucket of water.

An ordinary person can use it to wash their face, a writer can use it for hydrology, and a physicist can use it to break barriers!

But thinking of this, Li Bai'an couldn't help but frown:

"It's strange, if the Celestial Palace Space is convergent, then where did the momentum of the center-of-mass system go?"

In Huaxia language.

The term "system" typically represents a collection of various combinations, which can be further subdivided into many subsets.

For instance, the solar system includes various planets, the physics department can be divided into different classes, and a readers' group can be split into many more.

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

The momentum of the center-of-mass system is conserved when no external forces do work, which is a theorem akin to certain cosmic rules.

But now, if space is contracting, where has the momentum gone during this contraction?

Next to him, Academician Pan Jianwei pondered for a moment and tentatively proposed a possibility, saying:

"Elder Li, based on the current situation in space, could it be the second hypothesis of a spaceship colliding with interstellar dust?

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

The spaceship collision with interstellar dust is an interesting hypothesis.

In this hypothesis, the dust initially has no kinetic energy, and the spaceship travels through space.

When dust collides with the spaceship, it's a completely inelastic collision, causing kinetic energy changes within the system—resulting in some energy dissipation as heat.

The energy conservation equation should be written as:

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

Yet when Academician Pan finished speaking, before Li Bai'an had a chance to respond,

he himself furrowed his brows.

It's not that he believed the hypothesis was incorrect and immediately wanted to refute it.

Rather, he suddenly had this strange feeling.

This inexplicable oddness was like something stuck inside, yet when trying to grasp it, it couldn't be caught.

Unpleasant.jpg.

Unware of Academician Pan's anomaly, Li Bai'an, who was sitting beside him, continued discussing the center-of-mass momentum issue academically:

"External force?

That's possible, this hypothesis actually fits the Celestial Palace Space quite well, because every day the Celestial Palace absorbs nitrogen to generate Y particles, and energy conversion may not be a closed loop."

Then he paused and continued:

"Xiaopan, let's proceed with further tests, still focusing on the boundary, to better understand its nature.

Since we have determined its positive curvature stance, we can be bolder this time, using photons and excited particles."

Photons are common particles, present in every corner of life.

For instance, every time you turn on or off a particular video, countless photons shoot out like cannonballs, hitting your face directly.

Photons are neutral particles with tiny fluctuations, a special kind of matter that's macroscopically visible but microscopically mysterious.

The photon beam on this probe is primarily to detect the boundary's superposition state, a property similar to the quantum erasure experiment with double-slit interference.

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

Academician Pan and his team installed different media at the exit end, a total of four kinds.

When photons pass through the exit, their polarization changes due to the media's presence.

If the photon is in a quantum entangled state with another photon on or beyond the boundary, then the corresponding photon's state will also change accordingly.

This way, Academician Pan and his team can gather some information.

However, the pre-preparation of photons requires some time, so Academician Pan and his team first reviewed other collected information.

......

......

Note:

Having seen the news limiting minors from gaming, I'm suddenly curious about how many readers of this book are minors...

Minors can leave a 1 here

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