Under the influence of their mothers, sometimes even their siblings communicate and play with each other in this way. And the object of speculation is almost everything, from the person who gave the gift to today's itinerary. So this kind of puzzle game is familiar to her.

Most of the time, Mother's game isn't too difficult, so Qiongno thinks she'll be able to solve the puzzle quickly. But in reality, she was stuck at the first step.

The first task of any puzzle game is to examine and examine the question itself. This time, however, the topic did not come to the fore. The only starting point is just that postcard.

Considering that the chromosphere in the postcard is the universe itself, the first thing that comes to mind is the Einstein field equation. But when she tried to type in the answer, she ran into a dilemma because the combination lock didn't support entering letters. She wasn't surprised by this, and she didn't think her mother would make the mystery so complicated, as she had always known.

(The answer has to be a specific number, the question is which one?) ）

A finger tapped her lips, and she felt that her initial train of thought should not be too far from the answer. After a slight mutter, she chose to enter the gravitational constant.

But this answer is wrong.

(Strange, am I misunderstanding something?) It doesn't stand to reason that much. At least it should be a constant, which can't be too wrong, right? ）

She closed the card again, revisiting the story that had touched her a little.

(No matter how you look at it, you're talking about non-Euclidean geometry.) If the gravitational constant isn't, what else is relevant to the story and the universe? ）

After a moment's hesitation, she switched to another constant, the speed of light, which was related to the universe. It's still rightfully incorrect. To be honest, she herself thinks that if the gravitational constant is not correct, the correlation between the speed of light is undoubtedly worse.

Open the postcard again and let the color balls appear. Looking at the colorful dots of light on the color ball, Dome began to think about the possibilities from the other end.

(Theoretically, every point on the cosmic microwave background radiation panorama should be a tiny quantum wave.) After that, they expanded, forming what we now have as galaxy clusters, which directly shaped us. ）

It sounds like a great thing, but for Domino, it's just a subject that has been talked about a lot.

(If "beginning" refers to the beginning of the universe, is the answer this?) ）

She started from the smallest level to find answers and finally decided to give it a try. That is, the third constant related to the universe is input, which is the Planck constant on the microscopic scale, which is thought to be related to the birth of the universe.

Still incorrect.

(Strange?) ）

Perhaps, it is worth revisiting the very beginning of that New Year's card.

"The night of Valpergis, the beginning of the birth of light and darkness."

The second half of this sentence is obviously about the birth of the universe. But the first half of the sentence ......

According to my brother's reaction just now, it was obvious that he saw something. But as a student of folkloric history, she only remembered that the night of Valpergis began on the evening of April 30 and ended in the early morning of May 1. As for the specific content, she didn't know anything about it. So, what the postcard itself is suggesting is actually the process of the birth and expansion of the universe......

(Huh?) Wait a minute...... The expansion of the universe, that is, ...... ）

She suddenly realized that she should have reached the answer.

(As a decisive factor in the expansion of the universe, there is one important point, the Hubble constant.) ）

The Hubble constant, which determines the rate at which the universe is expanding, seems reasonable.

After entering the Hubble constant......

Not really.

Dome stopped typing the code, closed her eyes, and folded her hands on her knees.

With that, the answer is out.

Although she entered the Hubble constant at the end, she didn't think the Hubble constant was correct because of the date May 1.

As far as folklore history is concerned, she also knows that the way to calculate the time of the night is until the next day. From this point onwards, it is called the wee hours of the morning. When the time comes to May 1st, the "Night of Valpergis" will be over.

The mother wrote down the date of May 1 and pointed to the location of the lockbox, that is, the answer was the end of the "night of Valpergis". Here, the "Night of Valpergis" is the universe. The mystery of the password that the mother came up with, that is, the end of the universe.

According to Alexander Friedman's description, the outcome of the universe depends entirely on three constants – H, Ω, λ.

H, which is the Hubble constant. It represents the rate at which the universe is expanding.

Ω, is the average density of matter in the universe. It also means how much matter is in the universe and how much gravitational pull is generated, which will pull the expanding universe inward.

λ, the energy present in the vacuum. Albert Einstein once introduced the cosmological constant, but then he was considered a mistake and for a long time was considered a value of zero.

In principle, there are three possibilities for the outcome of the universe: if the Ω is greater than 1, it means that matter will produce a large enough gravitational force to shrink the universe; If the Ω is less than 1 and λ is equal to 0, the universe will expand forever; The third possibility is that the sum of Ω and λ equals 1, and the universe will continue to expand forever.

But what leaves all cosmic physicists speechless is that the universe is not expanding, but accelerating. That's the most astonishing fact revealed by the cosmic microwave background radiation panorama.

We are in a universe that is completely out of control.

In this case, the content of that story is the answer.

The story in the postcard is a reflection on non-Euclidean geometry, but it is not Riemannian geometry, not the gravitational pull of the universe inward, but the other side of non-Euclidean geometry.

Roche geometry, it shows not a trend of approaching, but a trend of moving away.

The universe is open, and this is the ultimate outcome of the universe.

λ exists, and must be introduced. It is ubiquitous in a vacuum, and it is always uniform and does not vary depending on distance. When gravity curls the universe, it stretches it to flatten; When gravity pulls the universe together, it pushes the universe outward.

λ is the cosmological constant, dark energy, and anti-gravity. It is a powerful force that occupies almost three-quarters of the universe.

It is the true arbiter of the end of the universe, the real answer to this puzzle.

Click!

The locking position of the safe makes the sound of the mechanism being touched.

Why did the mother choose this as the answer to the puzzle? Although the mother has always been suspected of doing things casually......

When I opened the safe, I saw a leather box about the width of a palm, which was beautifully made. Unlike the usual mass-produced leather cases, this one seems to be a pure handicraft that has been around for some years.

This should be the reward for this time, right? Although I'm afraid I won't need this box, maybe my brother will be interested in such a box.

Pick up the leather case, and feel unexpectedly heavy in your hand. It was clear that there was something inside. If you shake it slightly, you can hear the sound of hard objects colliding.

She placed the leather case on her lap and gently unfastened the clasp of the case. Her movements can be called cautious, because she had been mischievous by her mother in a similar matter.

However, this time, there was no element of prank.

On the top of the box was a small metal jug with a keychain on it. The sound of hard objects colliding when shaking the box just now should be made by it. On the lower floor, however, there is a thick stack of paper.

Dome picked up the small pot and unscrewed the cap, revealing a piece of paper falling out of it. When I unfolded the paper, I realized that it was a sticky note.

"Oleg Dimitryevich Kurkov was an alcoholic as a student. In order to avoid being caught drinking by the school, he thought of carrying a small amount of high spirits in such a flask as a means of quenching his addiction. But for God's sake, he apparently forgot his mouth full of wine. ”

"Poof!"

Although making fun of his teacher doesn't seem to be something a student should do, Qiongno still can't hold back for a while.

The handwriting on this note is obviously from the mother. Compared to normal times, the reward I received today was really interesting.

With a hint of evil curiosity, Dome turned his attention to the remaining thick stack of paper. If you look closely, you will see that the papers have been slightly yellowed, and it is clear that they have been going through some time.

I thought that it might also be related to the teacher's previous troubles, but just by looking at it, she knew that she had guessed wrong.

This thick stack of paper turned out to be a paper.

Admittedly, she has read countless papers. But the title of no article is as striking as the one in hand. The title of the paper goes like this:

How to Cook the Universe in a Box

When he saw the title, Dome even instinctively glanced at the box where the paper was stored.

Cooking the universe in a box? That's why my mother put this paper in such a leather case? It's hard to avoid such thoughts.

In fact, anyone who is accustomed to looking up papers will only find it noisy and flattering when they see this title at first glance. As is common practice in academia, paper titles are not usually presented in this way.

In fact, below the title of the paper, there is indeed a handwritten comment. This comment is written in Cyrillic letters, which translates to: "This is one of the few strange things I have seen that does not contain nonsense." ”

There is almost no doubt that this handwritten comment came from her teacher, Oleg Dimitrievich.

What she cares about the most is actually the author of this paper. The signature of this paper turned out to be her father.

In physics, her teacher, Oleg Dimitryevich, was always known for his open-mindedness and eclecticism. Although this was obviously a paper of the year, it was actually evaluated as a strange theory by her teacher, which really made her wonder what her father had written back then.

Sitting in the car on his way to the fireworks show, Dome opened the gift from the past, which his mother had rewarded him.

As a result, after only a few minutes, she had almost forgotten everything except the paper.

===================================================

Uploader's note: For some personal reasons, I haven't been there for a long time. This time, I will tell you a little story that everyone likes to see.

Friends who know a certain amount about scientists probably know that our respectable classmate Richard Feynman is a joke. Regarding his story, why do you claim to dislike the reputation of the public, but on the other hand, you spread the word that you are a Nobel laureate; What righteous words are upset about a beautiful woman's salary being too low, inviting that beauty to come to his side as an assistant, and then fooling this beauty into his wife; What is the result of a lot of effort, but it has to be said that it came out of a whim. And so on and so forth. In short, while being praised by the world, he does not forget to show his talent for comics everywhere (of course, objectively speaking, scientists in the post-war era may be out of the post-war mental state, and the phenomenon of comics is very common, and even those who are keen to get inspiration from ** are also very popular). But perhaps few people know that our respectable and lovely Feynman classmate has actually had a rather aggrieved experience.

This story is the famous story of "reorganization". Before the introduction of "renormalization", the infinity of QED was a crazy problem. Of course, this question is not what we are going to talk about here. The point here is that there were three solutions at that time: Shinichiro Asaga was the earliest, and Julian Schwinger was the most detailed and perfect. Compared to the above two, Feynman seems to be inferior in both ways. But Feynman provides the most intuitive way to do this, which is what we are looking at now.

But Feynman's grievances at that time were precisely caused by his invention. Both he and Schwinger presented their proposals at the Pennsylvania conference, with Schwinger in front and Feynman in the back. This was the beginning of Feynman's tragedy.

Schwinger is said to have spoken for more than five hours, almost perfectly. It was praised by almost everyone present at the time, especially the great god Nils Bohr. Then our Feinman classmate came on the field, and I don't know what he thought at the time, so he didn't say anything else at first, and drew a bunch of pictures on the blackboard first. You know, it wasn't now, and the people attending the meeting didn't know anything about his diagram. When he tried to express his theory with all kinds of distorted lines, Bohr could not sit still, and he stood up and harshly accused Feynmann of misleading that there could be no clear line between particles, claiming that Feynmann had mistaken the most crucial thing. Suddenly sprayed with a taste by the great god, our poor Feinman classmate was said to be stupid on the spot. He said that his diagrams were just a mathematical trick, not really that there was a clear path. Fortunately, although Bohr blamed him, he still let him finish the story. However, poor Feinman was really miserable, and he didn't dare to stay after finishing speaking, and fled the venue directly. It is said that the aggrieved one (who ran into the arms of Hans Bette, a Chinese nuclear physicist), cried that night.

Of course, all this finally made Feynman breathe a sigh of relief after Oppenheimer proved that Feinmann's and Schwinger's methods were equivalent, and everyone really understood the practical significance of Feinmann's diagram afterwards. But the matter may not be over yet, it is said (unconfirmed, I don't know if it's true or not) that because Feinmanturi has a trajectory similar to a counter-time movement (which we have mentioned before), it has also made another great god Einstein very unhappy. If this were true, it would be a tragedy.

But then again, whose fault is it? Many have even blamed Bohr for rejecting Feynmann's new ideas. In fact, objectively speaking, this accusation is also too harsh. In fact, as far as I personally feel, the main reason is that our lovely Feynman is too rough in his work. It's certainly a good thing to have a concise and fresh mathematical tool to represent it. But man, why don't you spread the word about this thing and let everyone know about it? This one draws a string of things that no one can understand according to their own path, who can figure out what you want to do? Especially before Schwinger just discussed rigorously and perfectly for a few hours, everyone has not yet come back to the taste, you then go up to play this hand, maybe the people watching below will wonder if you went up to make trouble, don't you say?

Feynman's story also tells us a truth of academic research: one can be a maverick. Before you can be a maverick, you have to get people to agree.

Personally, I feel that this should also be a reason that can be interconnected in various fields.

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