After this message, no more messages from the Trol civilization were delivered. The message of the Trol civilization ended here.
This news shocked Xiao Yu.
"Ten years, only ten years...the principle of entropy increase, heat death?" Xiao Yu thought quickly, and these words flashed through his mind.
Xiao Yu clearly knows what the principle of entropy increase is, and also knows the huge impact of the entropy increase principle on the universe. It can be said that it is precisely because of the existence of the entropy increase principle that time will not flow backwards, and the universe has been shaped into the current state.
Like this.
Entropy is a value that measures the degree of disorder in the distribution of matter within a system. It was born from the second law of thermodynamics. The concept of entropy can be illustrated with a simple example. Everything in the universe has its own entropy value, a tea cup
It has its own entropy value. A pen has its own entropy value. Even a computer or a human has its own entropy value.
Entropy values vary by size. A newly built house has a very low entropy value because it is neat and orderly. A dilapidated house that has not been cleaned for a long time and is full of dust has a very low entropy value.
The entropy value is higher than that of a new house.
Entropy is such a thing. The entropy value of a broken cup is higher than that of a intact cup. The entropy value of a broken computer is higher than that of a new computer. The entropy value of a rotting corpse is higher than that of a living person.
The entropy value is high. In short, the more tattered and chaotic the structure of a thing, the higher its entropy value.
In an independent system, the entropy value can only increase, not decrease. Therefore, a broken cup will not become a good cup, a broken computer will not become a new computer, and a dead person will not become a living person, and time will not become a living person.
Can't flow backwards.
Of course, a broken cup can be made good again through repair, and a broken computer will be as good as a new computer if repaired. Even if you master the cloning technology, you can clone a living person from a corpse, but there is one thing to note.
The concept of entropy is for an independent system. Now that it has been repaired and external forces have intervened, it is no longer an independent system.
It can be seen from the principle of entropy increase that if you don't clean a room, it will only become dirtier and dirtier. It is impossible that if you don't clean it, it will become cleaner. If a house is regarded as
An independent system. Without the influence of all external conditions such as gravity, external energy, external organisms, etc., as time goes by, this house will only become more and more chaotic. The white dust on its walls will fall off, and the house will
Collapse, eventually, all the materials that make up this house will spread evenly within this system. At this time, its entropy value will reach its highest.
This is the principle of entropy increase. Take our universe for example. It is an independent system, so the end of the universe must be heat death. After countless years, there will be no stars, all stars, planets, and comets in the universe.
, white dwarfs, neutron stars, and even black holes will all disappear, and the universe at that time will be filled with infinite leptons and photons.
This is the inevitable outcome of an independent system.
"Principle of entropy increase? Will this small universe dissipate?" Xiao Yu had a vague feeling in his heart.
"According to the Trol civilization, this small universe will undergo heat death within ten years...all the matter inside it will disappear. Does the rate of increase in entropy have anything to do with the size of the universe? Because the large universe is too large
It is too vast, so the entropy value increases more slowly. This small universe is too small and unstable, so the entropy value increases quickly, reaching the highest entropy value within ten years?"
Xiao Yu began to worry in his heart, because Xiao Yu also thought of another possibility.
That is, time.
"I don't know if the time of this small universe is synchronized with that of the big universe. I have been here for almost a year. I don't know how much time has passed in the real big universe. Since in this small universe, the entropy value increases very quickly.
Fast, does that mean that time passes faster than in the big universe? If I stayed here for one year, millions of years would pass in the big universe. That would be bad.
Millions of years are enough time for the Sweeper civilization to recover, and enough time for the Guardian civilization to repair their flagships. At that time, we still don’t know what the Milky Way will look like. I hope this won’t happen..." Xiao Yu
I prayed silently in my heart.
Worry about this matter even temporarily outweighed curiosity about space weapons.
"We must seize the time." Xiao Yu thought silently, quickly transferred into his mind the space weapon technology taught to him by the Trol civilization, and began to watch.
Finally got the most important piece of the legacy of Tolor civilization, but Xiao Yu didn't feel any excitement in his heart. If you have a life to get it, you have to have a life to enjoy it. Xiao Yu doesn't think that with his current technology
, can withstand things like entropy increase and heat death.
"Judging from the history of Trol's civilization, this small universe has existed for at least more than half a million years. So, there is no reason for it to continue to be stable in this short ten years after maintaining stability for half a million years.
There is only one explanation. In the past five hundred thousand years, the programs left by the Trol civilization must have been continuously obtaining energy from the universe, relying on external forces.
This prevented the continuous weakening of this small universe system."
"In this way, perhaps it can be explained that the entrance galaxy of this small universe is so empty. All the materials in this galaxy, except for the star that is too big to handle, the rest of the planets, comets, asteroids and the like
, they should all have been brought into this small universe by the Trol civilization and turned into energy." Xiao Yu thought secretly.
"In this case..." Another thought suddenly appeared in Xiao Yu's mind.
In fact, according to the laws of physics, time is not irreversible. Time is just a virtual concept. It is a value that measures the movement of matter. When a person walks from home to school, it takes him five minutes. If this person
When we walk from school to the door of our house, we are back to the starting point. Can we think that time has gone back five minutes?
This example is somewhat imprecise. After all, in addition to this person, there are many other substances in our world, with wind blowing and cars moving. Then simplifying this example further, if there is only one person in the universe,
A basic particle. Assume that this basic particle itself will not change in any way. Apart from this basic particle, there is no other matter in the universe. It takes five minutes for this particle to reach point B from point A, and then it
Returning from point A to point B, everything is back to the starting point, so does time go back five minutes?
Some people may say that time has not flowed backwards, time has still passed. But after this elementary particle returns to the origin, every situation in the universe will be exactly the same as five minutes ago, so why can't it be said that time has flowed backwards?
This example is a bit extreme. Of course, such a situation will not happen in the real world. But even in the real universe, there is still a way to go back in time. At this moment, Xiao Yu thought of such a way. Of course, it can
If it cannot be realized, there will be another issue.
Although the principle of entropy increase shows that the time of independent systems is irreversible, none of us can be sure that our universe is unique. It may not be certain that other universes really exist. In other universes, there may also be a large amount of matter.
A large amount of energy. If one day, energy can be obtained from other universes to subsidize our universe, then the entropy value of our universe may be reduced. When the entropy value is reduced, time may go back. It is like the intervention of human power.
, will restore the room from dirty to clean, and the intervention of human power will restore the broken cup to good condition.
"A civilization that can do this must already be a god-like existence. Don't even think about a sixth-level civilization. If... I mean if, one day I can reach this level, I can put this big universe back into order and bring order to the world.
It is not impossible to return everything to the starting point and return the earth to the human era." Xiao Yu thought to himself, "Such an ability can definitely be found only in level seven or above civilizations. If you can turn back time,
Logical weapons... I don’t know what the secrets of the seventh-level civilization are.”
Time reversal and logical weapons are two abilities that Xiao Yu speculates may be possessed by civilizations at level seven or above.
Secretly shaking his head, Xiao Yu threw the chaotic thoughts out of his mind, and continued to study the information carefully.
The result made Xiao Yu a little disappointed. Originally, Xiao Yu thought that he could get a glimpse of the secrets of the sixth-level civilization space technology from this technical document, paving the way for him to step into the sixth-level civilization, but now Xiao Yu
I discovered that I shouldn’t think about this anymore.
Because this technical document is of the same nature as the ghost detector that Xiao Yu once obtained. It only explains the manufacturing and use methods, but not its application principles, technical details, scientific and technological theories, etc. In other words, there is
With this technical document, Xiao Yu can create space weapons and use space weapons, but there is no way to make even the slightest change to this space weapon. Because Xiao Yu does not know the manufacturing principle of space weapons.
"People, don't be too greedy. Having this kind of weapon is enough. You might as well study its principle in detail later." Xiao Yu thought to himself, got rid of the unhappiness in his heart, and began to follow the guidance of the technical documentation to manufacture
The first level six civilized weapon I own, splitting space. (To be continued...)