I have a full-time hero system

Chapter 396 I Have a Way to Prove
Yuan Xiao looked relaxed: "So, where do we start today's lesson, well, I want to start with the contradiction between the equation recently discovered by Professor Froz and Newtonian Mechanics.

There are already related topics on the Internet, and I am just making an integration description here.

The first is Newtonian Mechanics, which everyone is familiar with, and I released it with Vice President Zhou Zhengyi. "

Saying that, Yuan Xiao waved to Zhou Zhengyi below.

"Newtonian mechanics is established as a whole, there is a very critical point, it needs an absolute space," Yuan Xiao raised his finger, "that is, the frame of reference.

To give a simple example, if a person stands still and sees a car driving past in the distance at a speed of 60 kilometers per hour, can we easily get the speed of the car?

But if the person is running in the same direction as the car, and the speed is 10 kilometers per hour, then at this time, we naturally think that the speed of the car relative to the person is 50 kilometers per hour. "

The students nodded, this is a very simple and intuitive reason.

"Then here, I will leave a question for everyone to think about first," Yuan Xiao smiled, "Strictly speaking, this person and the car, are they only at this speed?"

"Planet Bruya is rotating, and this is also the speed." Soon some students shouted loudly.

"Pay attention to classroom order, although what this classmate said is correct," Yuan Xiao was not angry, "So you see, the planet is rotating and revolving, so people and cars actually have other speeds.

Therefore, we can think that in the universe, an absolutely static frame of reference may not exist.

Note that I'm saying maybe now. "

Froz frowned slightly. Yuan Xiao had instilled a major premise from the very beginning.

The concept of ether is the uniform and static matter that exists in the universe.

Although it is invisible and intangible.

This point of view is still derived from the Newtonian mechanics announced by Yuan Xiao himself.

And see how you circle back.

"The next thing I want to explain is Professor Froz's equation." Yuan Xiao held the electronic pen sideways, and the screen behind him lit up, and what appeared was the PPT he made, showing Froz's equation.

"Strictly speaking, this is not the first time this equation has been discovered," Yuan Xiaojie continued, "The last time I was doing archaeology, I saw the exact same equation by chance.

And this equation in archaeology, called Maxwell's equation, is an important theory about electromagnetism. "

Froz's expression was a little embarrassed.

Federal academic researchers have always had a bad reputation, and they always publish archaeological discoveries as personal research results.

The Frotz equation he discovered this time is genuine.

But when Yuan Xiao said this, it was inevitable that some people would question it.

He couldn't help clenching his fists in private.

"It should be noted that I have no other meaning here," Yuan Xiao looked at Froz and nodded slightly, "The capable people in the world always lead to the same goal.

In recent years, the physics community has also made great progress in the research on optics and so on.

On such a basis, Professor Froz came up with the same equation, which I personally think is completely normal.

So, in my open classes, I'll call it the Maxwell Frods equation. "

Froz secretly breathed a sigh of relief, Yuan Xiao has justified his name.

Academic research is already inferior to the archaeological field. The equation was indeed discovered by myself, but unfortunately it is not No. 1 in the world.

Archeology has the same result.

So being able to name it is already a very good result.

"Some people will definitely question, how do you explain that it is Maxwell's equations discovered by archaeology," Yuan Xiao knew, "Strictly speaking, I really have no evidence.

However, please listen patiently, and you will know the difference between the final conclusions of Maxwell's equations discovered by archeology and Frotz's equations. "

This is indeed what many people want to ask, but Yuan Xiao didn't expect to say that.

Even Froz concentrated.

As soon as the expert makes a move, there is only no one. Yuan Xiao's performance so far has made everyone put away their underestimation.

Does this guy really understand physics?

Yuan Xiao adjusted the PPT page: "The result of the Maxwell Frods equation is as you can see.

So the problem here is that after we substitute the experimental results, it is easy to calculate that the speed of electromagnetic waves is 30 kilometers per second.

This is consistent with the speed of light, so I will use the speed of light to describe this kind of expression in the future.

In addition, there is another major discovery, that is, the speed of light has nothing to do with anything.

In other words, no matter which direction they travel, the speed is 30 kilometers per second.

Then the question arises. In this case, according to the explanation of Newtonian mechanics, what is the relative speed of 30 kilometers per second?

If there is a frame of reference, then how to explain that the speed is the same in any direction. "

Some students raised their hands, and Yuan Xiao knew that further explanation was needed, so he nodded.

"What the teacher means is that if this reference frame exists and is also moving, for example, it is consistent with a certain direction of the speed of light, then in this direction, according to the explanation of Newtonian mechanics, the speed of light should be 30 kilometers, minus the reference frame speed of movement."

As expected of a student of the National University, he quickly grasped the key points.

"Yes," Yuan Xiao smiled, "Conversely, if this frame of reference is moving against the light, then the actual speed of light should be 30 kilometers plus the speed of the frame of reference."

It is easy to understand that according to the analysis of the reference system of Newtonian mechanics, this is the conclusion of addition and subtraction.

"However, in fact, the direction of the speed of light is the same," Yuan Xiao looked at Froz, "I think Professor Froz agrees with such a conclusion."

Froz nodded: "Indeed, as Teacher Yuanxiao said, this was the huge problem I faced at the time, and Newtonian mechanics could not explain such a phenomenon."

"That's why you put forward the concept of ether." Yuan Xiao said like a spring breeze, "Ether exists in the universe, invisible, intangible, uniform and absolutely static.

So, what is the meaning of such an existence setting?

First of all, it can be used as a medium for light propagation, explaining why light is a light wave. "

In people's conventional cognition, all fluctuations need a medium, and the same is true for light waves.

Ether has become the best transmission medium.

It's easy to understand, the students nodded.

"The other one is to become the absolute frame of reference for the speed of light at 30 kilometers per second," Yuan Xiao looked at everyone, "In this way, Newtonian mechanics is not wrong, and Froz's equation is also correct. The contradiction between the two will be does not exist.

Very perfect result. "

That's it, this time the students understood.

Froz also frowned, is there any problem with this?

"But, does ether really exist?" Yuan Xiao continued, "It can't be seen or touched, how can we prove it?"

Everyone: How do we know, don't we look at you?

Yuan Xiao smiled: "Yes, I have a way to prove whether the ether exists or not."

(End of this chapter)