Li Hanying's words sounded self-deprecating at first glance, but Lu Ming couldn't see any expression fluctuations on her face, he knew that there must be something to follow.

But Liuxiang didn't seem to see through this, and her yellow-haired girl was so "ashamed" that she began to "comfort" the big sister in front of her.

"In fact, it's not so miserable, how to say it's also a theory that has been passed down for hundreds of years, there will always be its own way out, hasn't it been proved that there are indeed some phenomena that can't be explained by mechanics and scenic spots, but quantum mechanics can make sense? That means that this thing must be closer to the truth than the previous things. ”

Looking at this lingering fragrance who was obviously smaller than himself but dared to pose as a "confidant sister", Li Hanying also couldn't cry or laugh, "Sister, you understand what I just said, science doesn't care about right or wrong, with the continuous improvement of human cognition, the old theories will always be overturned one day, in other words, any theory, in the end, is wrong, we now feel that a set of theories is 'correct', not because it is correct itself, but because society will need it to be correct, then it must be 'correct'."

It's all about productivity, not anything else. ”

Hearing this, the corners of Liuxiang's eyes suddenly moved, and in a trance, Lu Ming felt that she glanced at herself and Hongchen.

But when she looked closely, Liuxiang's eyes were looking at Li Hanying.

Lu Ming didn't think much about it, it was an illusion.

I only heard Li Hanying continue, "And then again, even if you really want to force the pursuit of 'precise correctness', that is also the work that classical physics needs to do, and quantum physics itself pursues 'inaccuracy', eh...... Are you studying accounting? Did you know that there is something called Heisenberg's uncertainty principle? ”

Liuxiang was stupid for a long time, racking her brains to find the memory fragments for a long time and then began to shake her head.

"What about Schrödinger's cat? Or the idea of parallel universes? ”

Liuxiang nodded immediately this time, "It feels like a lot of things like in the movie." ”

"Then you know it's with the movie? There are thousands of scientific theories in this world, why do those movie screenwriters always cling to some time machines, parallel universes, apocalyptic crises and super monsters?

That's because these things are not reliable, reliable things, where are the audience willing to spend money to buy tickets to watch in the cinema? For example, I saw a movie synopsis that said that the film is about the inner angles of a triangle and the sum is 180 degrees, and then, there is no then...... God, I don't think a normal human being would be able to look at something like this that he already knew when he was in elementary school, right?

It's not reliable, but the audience wants it to be reliable, so those movies are always making these things.

Actually, my history of physics teacher was a monk at all, and he didn't study physics at all, and when he was in class with us, he always liked to talk about inexplicable things, and I remember saying something like this again...... What's coming ...... Oh yes,

The easiest way to feel a piece of history is to look at the themes of those literary and artistic works that circulated among the people during that period, and look at it the other way around!

What are the characteristics of the protagonist, and what are the characteristics that are lacking in this era.

If at some point almost all the films in this place were labeled 'anti-war', then you can almost conclude that it was a time when there was a war and people wanted peace and were willing to buy tickets for 'anti-war' films, and of course those directors flocked to it.

If for a certain period of time, almost all the movies in this country were sports inspirational films, and they were all football, and then the plot basically said that the protagonist team with no talent won the championship through how hard they worked, then it was that the level of football in this country at that time was very bad, so bad that everyone could only feel the joy of winning through movies, or during that time, everyone felt that no matter how hard they worked, they couldn't change their fate.

It's all disaster movies, and the earth explodes at every turn? That means that people at that time have reached a certain point of comfort, and they have nothing to do and want to find excitement.

Some national movies boast all day long about how great their country's history is, how splendid their culture is, and then say how great their ancestors' inventions and creations have contributed to human civilization.

For a certain period of time, a country's movies put their own things and did not shoot their own things, but only filmed foreign mythological things, and those foreigners in it were still dressed in luxurious clothes and jade food, and then when they came to the protagonists of their own country, they were all gray and dirty and were about to starve to death, as if their country had no history or culture at all, how to summarize this era of literary and artistic works?

Therefore, in the face of the phenomenon of things like time travel and parallel universes being turned over and over again on the big screen or made into games, as a quantum mechanics researcher, I am very ashamed, which shows that our field is still too immature. ”

Speaking of this, Li Hanying's face showed a hint of loss.

But then she immediately raised her voice, "But my shame is not because we can't make a space-time machine, but because the basic education of this discipline is too insufficient, and everyone doesn't know what this discipline is researching!! ”

Liuxiang was shocked, "The space-time machine is nothing?" But I read in the book that Einstein thought that the effect of space-time reversal could be achieved at the speed of light? ”

"I want to ask you what you saw in that book?" Li Hanying resolutely asked, "I'll go to the report immediately!" It's completely misleading, it's completely demonizing Einstein, okay!

Albert Einstein never said anything like this, and his theory ......

Well, I won't talk about the theory, I'll give you the formula directly,

Δt (superscript apostrophe) = Δt / [root number (1-u squared/c squared)]. ”

Liuxiang blinked, indicating that she didn't understand.

Li Hanying translated, "U is your speed, c is the speed of light, Einstein's formula means that the speed of time passage is negatively correlated with your speed;

The slower your speed, the smaller the ratio of this speed to the speed of light, of course after the square, and the closer the thing in the root number is to 1, the more negligible it is;

Conversely, the faster you go, the closer the square of the ratio to the speed of light is to 1, and the closer the contents of the root number are to 0, the faster your time will pass; In other words, your 1 second may correspond to 1 year, 10 years, 1 century or even more in the outside world, and you may just blink your eyes and instantly move to 10,000 years after the vicissitudes of life for the outside world!

So, what if, on the other hand, it's not that you're running, but you're watching someone else run in a time close to the speed of light?

Your vicissitudes of life are only 1 second for him, and it seems to you that his time has not passed forward.

Got it?

This is the so-called 'the faster the speed, the slower the passage of time', and those who are clever in their own reasoning and deduce down from it that 'when the speed of light is reached, time stops; Beyond the speed of light, back in time'.

Very well, Mr. Einstein took the blame!

But what is it actually about?

The formula has been given to you, what is the speed to reach the speed of light, what is the square of u compared to the square of c?

1！

What is 1-1?

0！

What is the square heel of 0?

0！

What is 1 in 0?

Infinitude.

What is the concept of infinity? Let's assume that our human definition of 1/0 and the limit is correct.

Time doesn't stop! Rather, it is moving forward at a speed that is too slow for us humans to observe or imagine.

So, what about faster than the speed of light?

That's not even one zero is used, the root number is negative, and the number is imaginary.

What is an 'imaginary number'?

The number that does not exist! It's not even a hypothesis, it's pure speculation! ”

Li Hanying was excited, almost without stopping, and finally breathed a sigh of relief, and then began to explain to Liuxiang in a calm tone, "Actually, Mr. Einstein himself resolutely denied the possibility of turning back time.

In fact, this thing is really very philosophical to say.

Your 1 second may be a vicissitudes for others.

In other words, don't speculate about other creatures by the natural laws of the world in which we live.

That's why some people say that Mr. Einstein said that 'the end of science is philosophy, and the end of philosophy is theology', haha, Mr. Einstein is so pitiful, he is always said under the pretense of saying something that he has never said.

However, although Mr. Einstein did not say such a thing, it actually makes sense, and physics, especially quantum physics, is indeed closely related to philosophy in many places, and it seems that they have the same goal.

Then again, in fact, the time machine is pretty good.

At the very least, those movie writers know that there's something called the 'grandmother's paradox,' and they don't write anything about going back in time and changing history.

The most chilling thing for those of us who study quantum physics are the movies and games that talk about the theory of parallel universes! ”

When she said this, Li Hanying was even angry!?

"I don't even bother to talk about the mistakes made by those screenwriters on academic issues, just talk about their works themselves!

Is this world line a tragedy, yes, just change to another line, or is it a tragedy?

Keep changing! Until the reunion!

I know the audience likes to watch this, but the above doesn't like it!

It's not that it has to end in comedy, but when the line is changed...... It turns out that the line doesn't matter! No matter what!

If this theory spreads and becomes ingrained, who will work hard?

I'm destitute on this part of the world...... So what? From the perspective of probability, there is always a world line that is rich and expensive, right?

The poor don't want to make progress, and the rich are pessimistic and misanthropic. From a probabilistic point of view, my impoverished world line must abound!

How could the above tolerate such a thought spreading?

As a result, we are the ones who take the blame! There are so many projects that you can't apply for funding at all! We can only go out on our own and solicit sponsorship and make extra money, to be honest, I'm almost a liquid helium salesman now! ”

Liuxiang finally got something she could barely understand, and hurriedly asked, "Liquid helium?" Is it said that helium in its liquid state? Sister, aren't you studying quantum physics? What does it have to do with this? ”

Li Hanying said angrily, "Those screenwriters who were harmed went out to make extra money, the most reliable practical application of quantitative mechanics is quantum computers, it just so happens that this technology has also matured in recent years, and now many small countries in the world want to catch up with the fashion to get one, but small countries, the technical level is just like that, they can't do it themselves, some of them have better diplomatic relations with our country, our country will have technical assistance in the past, but some countries that are not very good, but not bad, want to get it, It's up to us to bid. ”

Liuxiang still doesn't understand, "But what does quantum computers have to do with liquid helium?" ”

Li Hanying blinked, "Are you sure you want to hear it?" It's not that complicated, but it's not that simple. ”

The look in his eyes made it clear that "you may not understand what you say".

Liuxiang blushed and forcibly replied, "Of course you have to listen!" I'm a person who likes to absorb the nutrients of knowledge the most! ”

Li Hanying glanced at Li Lingfeng, who obviously saw that Liuxiang was holding on, and was so anxious that he squeezed his eyebrows, it seemed that he was conveying a signal of "you are more popular".

Li Hanying made a difficulty, tilted her head and organized the language for a long time, and finally spoke under Liuxiang's "waiting".

"When it comes to quantum computers, first of all, you have to understand the 'wave-particle duality', do you know this? I remember high school physics should have it, right? Wave-particle duality of light? ”

Ruka nodded at the speed of light.

Well, with her reaction speed, Lu Ming felt that she might not even be able to hear what Li Hanying was saying.

But Li Hanying is the first time she has seen Liuxiang, how does she know how strong the person in front of her is?

Anyway, Liuxiang nodded, and she thought that the other party really understood.

"That's simple, let's put it this way, in fact, there is no essential difference between quantum computers and traditional computer architectures;

It's all based on artificially defined algorithms and criteria that are infinitely exhaustive, filtering out the right ones from a large amount of data and transforming them to the screen.

(End of chapter)