Grandma's wanton life

Chapter 553 Mathematics in Physics!

"Calculated?"

"It's impossible!"

"It is impossible to calculate the value of the Casimir force!"

"This is the consensus of the physics community!"

"Professor Ye, don't talk nonsense!"

"The Casimir effect is a force in a vacuum. Unless it is measured experimentally, it is impossible to get a value!"

"It is unrealistic to calculate the Casimir force. There are too many uncertain factors involved in it!"

When Ye Feng said that he could calculate the Casimir force, the physicists on the scene immediately exploded!

One by one, it was as if someone had stepped on their tails!
Can Casimir force be calculated?
impossible!
Absolutely impossible!
The physicists exploded in an instant!
And the mathematicians over there were stunned.

What do they say?
What is the Casimir effect?

Calculated?

What's the matter?

Why did those people suddenly become manic?

"Old Li, do you know what's going on?" Ma Luan asked with a dull expression.

"I don't know, I don't know what I'm talking about." The old professor Li Shuwen was also confused.

"Professor Delevingne, do you know?"

"I do not know!"

"What did you figure it out?"

These mathematicians were confused and didn't understand what they were talking about.

A rather irritable old man said impatiently: "Professor Ye can't calculate what? Isn't it just some power? Isn't it difficult to calculate the sum of all natural numbers? Since Professor Ye said it can be calculated, it is I can figure it out!"

"That's right, what are you making such a fuss about!"

"Are you questioning Professor Ye?"

"I don't believe Professor Ye, what kind of seminar are you here to attend?"

Although a group of mathematicians could not understand, this did not prevent them from being sarcastic.

"You know what a fart!"

Professor Smith said angrily: "Do you know what the Casimir effect is? Do you know what the Casimir force is? Ah? If you don't know, don't talk to him!"

Ye Feng's words had such an impact on them that Professor Smith started to swear.

Dean Ma scratched his neck, "We don't know, but we know that Professor Ye won't talk nonsense!"

"Humph!"

Professor Smith did not answer this question, but said coldly: "The Casimir effect is a natural result of quantum field theory. Do you know what quantum field theory is?"

Dean Ma snorted, folded his arms and said, "Do you know what Goldbach's guess is?"

Professor Smith lowered his face, and did not continue this topic, but explained: "Quantum field theory says that there is nothing in the vacuum, and that the vacuum is still full of energy. Quantum field theory transforms the energy quantum in the vacuum Transformation, the whole space is filled with vibrating balls.”

A professor who does not study quantum mechanics was a little puzzled and asked, "Even if this is the case, what does it have to do with the inability to calculate the Casimir force?"

This question touched the hearts of many people, and everyone was actually very puzzled. Why did those physicists explode after Professor Ye said that he had calculated the Casimir force?
Not only the mathematicians on site did not understand, but even some physicists who were not involved in this major did not understand.

Professor Smith continued: "To understand this, you must first understand what is the Casimir effect. The so-called Casimir effect is to place two very thin neutral metal plates in a vacuum, and the two metal plates are separated from each other. The closer you get, the greater the gravitational pull."

Speaking of this, a mathematician called out, "Gravity? Then how do you know it's not gravitational?"

This statement immediately attracted the attention of many mathematicians!

Brother can!
Still understand this?

Many people gave him a thumbs up!

However, Smith sneered and said with contempt: "Gravity? Gravity is quadratic, and Casimir's force is fourth. Do you think this is gravitation? Do you have some common sense?"

"..."

The mathematician blushed instantly.

Ma Luan curled his lips and said: "Can you just talk about the main points? After talking so much, why can't you say it can't be counted?"

Smith frowned, thought for a while, and said, "Let's put it this way, the Casimir force is the energy outside the two metal plates minus the energy inside the gap. The difference is the value of the Casimir force."

"Isn't that a good deal?"

"Easy to calculate? Heh." Smith: "This thing will never be calculated!"

Situ Yuan also nodded and said: "Indeed, because you can't calculate the energy in a vacuum. There are countless harmonic oscillators and waves in a vacuum. They are infinitely many. Whether it is in a vacuum or between two metal plates All harmonic oscillators are infinite, how to subtract one infinity from another infinity?"

"Infinity minus infinity?"

Hearing this, the mathematicians immediately raised their eyebrows, "Tell me carefully, what kind of infinity is it?"

They feel that the word infinity is a bit familiar!

"Give me a specific example." Dean Ma said: "Why do I feel that this can really be calculated!"

"I also have this feeling!"

"Really, I really want to understand."

"Me too."

These mathematicians didn't even understand what the Casimir effect is, but at this moment they seemed to understand what Ye Feng meant.

Casimir force?
Infinity minus infinity?

This Nima is so familiar!
"You can count too? Heh!"

Professor Smith felt insulted, "When the gap between the metal plates is ten nanometers, you can calculate the Casimir force for me!" Smith was really angry, and he was more angry than anyone else, because he authoritative experts!

Among the physicists who study quantum field theory in the world of physics, Professor Smith can definitely be ranked in the top five!

This Casimir effect, a phenomenon in quantum field theory!
Ye Feng said he could calculate it, so he could tolerate it a little bit, but these mathematicians also said they could calculate it?
Count you uncle!
Let me count it for you!
Smith directly gave the distance between the two metal plates, and let everyone do the math!

What the hell is this?

They don't even understand what the Casimir effect is. It's impossible to calculate it with just one distance!
But at this moment, Ye Feng, who had been silent all this time, said, "Ten nanometers?"

"Hmm." Smith narrowed his eyes and said, "Does Professor Ye want to do the calculation on the spot?"

"sure."

Ye Feng smiled indifferently, and then turned on the multimedia.

The computer screen was projected on the big screen, and Ye Feng directly typed various symbols with the keyboard, including mathematical symbols and physical symbols.

To be honest, Ye Feng was probably the only one who was able to use the computer so proficiently at the scene.

Soon, numerous formulas and numbers were listed on the big screen.One after another, many people's eyes are dazzled.

To be honest, Ye Feng doesn't understand the Casimir effect.However, he knows how to calculate Casimir force!

Because of this physical phenomenon, it was a famous existence in the world of mathematics in the previous life!

The conclusion that the sum of all natural numbers is equal to minus one-twelfth is verified through this experiment!
As Ye Feng kept typing on the keyboard, there were more and more formulas on the big screen.

At this moment, the physicists were frowning. They were no strangers to the formulas Ye Feng used.For example, the calculation of the vacuum expectation value of the electromagnetic field in the metal chamber, the calculation of the standing wave, the calculation of the zero-point energy, etc., these are all physical formulas known in physics, and there is nothing to understand.

For the calculation of Casimir's force, someone has actually done it a long time ago, and finally found that in the last and most critical step, there is no way to continue!

At this time, Ye Feng has reached the last step: subtract the energy in the metal cavity from the standing wave energy in the vacuum, and the result is the Casimir force!
However, there is an unsolvable problem here.There are countless standing waves in vacuum, how to sum them up?Similarly, there are countless standing waves in the metal cavity, which is a misunderstanding in the eyes of physicists!
In their view, this is subtracting the infinity from the innumerable!
How does this count?
However, at this time the mathematicians on the scene were boiling!

"I see!"

"This is the step, I understand! I understand!"

"I've figured it out!"

"Isn't this the need to sum the natural numbers?"

"Minus one-twelfth!"

"So that's the case! No wonder Professor Ye studies the sum of all natural numbers! So it's needed here!"

"Amazing! Really amazing!"

"I never thought that a question that has always been recognized by the mathematics community as meaningless would be used here!"

"I just don't know if the result is right!"

"Professor Ye must have done the calculation!"

"Yes, don't worry!"

excitement!
boiling!

The shouts are about to lift half the roof off!

Mathematicians seem to have discovered a new world at this time!One by one screamed excitedly!
In stark contrast to this, are the physicists on the other side. It's their turn to be confused at this time. They haven't understood what's going on yet. It's obvious that they haven't figured it out yet?What are these bastards excited about?

These physicists all looked at each other in blank dismay, confused.

However, in the next second, these people were stunned!
On the big screen, Ye Feng directly brought negative one-twelfth into it, and then, infinity was eliminated!
Was eliminated!

I rub!

Is he fake?
"What's the situation?"

"What about infinity?"

"Just, just gone?"

"No! The final result is absolutely wrong!"

"This, how could this be?"

Three seconds later, Ye Feng gave the answer.

All the physicists stared straight at the final result on the big screen - 101.3 kPa!

Professor Smith is struck by lightning!
Dean Situ Yuan was dumbfounded!
All the physicists present who knew quantum field theory were dumbfounded!
"President Situ, is this the right result?"

"Professor Smith? Is that the answer?"

"Is this result accurate?"

"Is there a big difference from your measurement?"

"Is it right or not?"

"You guys are talking!"

Those professors who don't understand have already turned around in a hurry.

I saw Smith said dully: "And the measurement results..."

"How about it?"

"Say it!"

"How much is the difference?"

Smith said with blank eyes, "Exactly the same."

It's exactly the same!
hiss!
As soon as these words came out, everyone gasped instantly, and the entire auditorium became completely silent!

Whether it was these physicists or the excited mathematicians just now, they all swallowed involuntarily at this moment, and looked up at Ye Feng on the stage in shock!

(End of this chapter)