We live in three-dimensional space—if we think of time as a dimension, it should be four-dimensional, which is something that all naughty children on the streets know, but this is not the case.

"We live in a few dimensions?" Ding Sina asked this question, and then gave Xiao Cheng a bibliography, involving advanced mathematics, quantum mechanics, thermodynamics, electromagnetism and other subjects, Xiao Cheng read and studied every day in the detention center, and the more he read this book, the more frightened he became!

In the first chapter of high school physics, the definition of force is: force is the interaction between objects. When I push you, I put a force on you, which is the easiest to understand. But how did the apple that fell on Newton's head fall?

Gravitation, gravity, is still present in a vacuum, how does it act on objects?

Einstein's general theory of relativity in 1915 explains this problem: gravity is not a force in the traditional sense, but a spatial distortion caused by the presence of the mass of an object.

The moon revolves around the earth because of the gravitational pull of the earth, which can be understood according to the general theory of relativity: imagine space as a three-dimensional trampoline, the earth is placed in the middle, the trampoline will be pressed out of a large pit, and the moon will roll on the edge of this pit.

In other words, the gravitational pull of the earth does not act on the moon, but on the surrounding space, and the space is distorted by the gravitational pull of the earth, and the moon moves in the distorted space, as if it revolves around the earth from a three-dimensional perspective.

Gravitation, that is to say, not only the earth, but everything is the same, including ourselves, because our mass is relatively small, so the effect of this gravitational force on the object is very small, and it is ignored, and it is ignored that the object distorts space.

We live in a distorted space, and what we think of as three-dimensional space is actually the space after being distorted by three-dimensional objects.

Or it doesn't matter, the point is that we have a little breakthrough, the universe we live in is not necessarily three-dimensional, just because we and the matter around us are three-dimensional, so that the space around us is distorted into three-dimensional.

Most of the formulas and theorems in macroscopic physics are only valid in three-dimensional space. Why do many mechanical formulas fail in microphysics? Because in the microscopic world, space is not absolutely three-dimensional. The mass and volume of the particles are too small to completely distort the space they are in, so we feel like they are moving randomly.

Actually, it's not that it's not ruleless, it's just that it's not the rule of three-dimensional space.

Contacting Ding Sina again, looking at the girl in the video, Xiao Cheng actually felt a sense of awe.

The bibliography provided by Ding Sina and the questions she asked actually pointed out the direction of Xiaocheng's learning, and along this direction, Xiaocheng had already seen the girl's results, and she had unified macroscopic and microscopic physics at least at the level of multidimensional space.

Perhaps, her present is more than that.

"The space we are in is not three-dimensional, it is only a distorted three-dimensional, do you want to tell me about it?" asked Xiao Cheng impatiently.

Ding Sina nodded, "You really didn't disappoint me, I expanded the space to the eleventh dimension according to the string theory, and through the calculation, I unified the macroscopic physics and the microscopic physics, and in the eleven-dimensional space, I can accurately calculate the trajectory of the particles." ”

Xiao Cheng was awe-inspiring in his heart, if Ding Sina's present was announced to the public, it would inevitably cause a shock in physics and even the entire scientific community.

"Of course, that's not all I have now. ”

Xiaocheng is a little looking forward to it, Einstein of intelligence 2oo appeared the theory of relativity, laying the theoretical foundation of modern physics for a hundred years, until recently, the "gravitational waves" he predicted a hundred years ago were finally detected by the Massachusetts Institute of Technology, and Ding Sina's IQ is the same as herself, absolutely above 3oo, what amazing is there for her? (The time trajectory in the book is still in 2oo6, and gravitational waves are detected in 2o16)

What will be her impact now?

"Going back to general relativity, matter distorts space, why is that?"

The difficulty of this question may not be inferior to why the apple falls instead of flying into the sky, and to understand this question, we must first figure out what matter is and what space is.

Matter is repeatedly split, molecules, atoms, nuclei, protons, neutrons, quarks, electrons, etc., according to the latest string theory, the most basic unit that makes up all matter is a small "string of energy", in this sense, matter is made up of energy.

According to Einstein's mass-energy formula, mass and energy can be converted into each other.

Energy = mass x-ray squared.

"Let's get rid of numbers and look at this formula, what is a degree? Distance divided by time, distance is actually the concept of space, we can think of distance as a one-dimensional space. ”

"Energy = mass x-ray squared, divide the masses on both sides of the equation, and the formula will look like this: energy/mass = light x-ray, that is to say, the mass-energy ratio is the square of light!

This calculation is all the most basic, energy/mass = 1-dimensional space x 1-dimensional space/time squared.

Isn't the square of one-dimensional space a two-dimensional space?

Mass is made of energy, so that is, time and space have the same properties, or are they the same thing?

The ratio of mass to energy is the square of light, and in Einstein's special theory of relativity, light is constant, that is to say, the mass-energy ratio of this world is constant! Why? Because the mass-energy ratio is the basis for building our space!

"You've studied general relativity, you should know the concept of gravitational waves, right?" asked Tinsina.

The concept of gravitational waves is actually very simple, the earth exists in space, causing the surrounding space to be distorted, and the space ripples caused by space-time distortion are gravitational waves, which propagate energy in the form of gravitational radiation, and have now been successfully detected.

"The point is that the space warp creates a detectable energy. ”

This sentence shocked Xiaocheng again.

In the process of distorting space into three-dimensional space, space in other dimensions releases energy to the surroundings, allowing us to think of two questions: first, space and energy can be transformed, at least space can be transformed into energy, and second, is the energy we see every day the root cause of the transformation of space?

"I can't find an accurate word to describe this relationship, it's not accurate to use composition, composition, and transformation, so let's use composition for the time being. ”

Xiao Cheng understood, and replied preemptively: "Are you saying that matter is composed of energy, and energy is generated by changes in the dimensional dimension of space, and space and time are the same thing? Is it possible to understand that matter itself is a special form of space-time, and the cosmic space we are in now is also a mode of existence of energy or mass?"

Ding Sina nodded, "Einstein's basic assumption of the special theory of relativity, the principle of invariance of light, is because of this, the proportion of space and time is constant, so light cannot be crossed, mass, energy, space, and time are built in a certain proportion and structure, so there are so many interesting phenomena in three-dimensional space." ”

"Actually, I still realize that the soul belongs to the high-dimensional space. ”

——————

I inquired with the second uncle of the neighbor, and it seems that I lack more than one translator to nominate the Nobel Prize in Literature, and I have to recommend it to someone with nomination qualifications.

Anyway, please raise your hand if you're confused!

(End of chapter)

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