Ma Cha thinks in the House of Miracles.

To measure something, there must always be a unified standard. There are common units in the world, such as meters, and the meter is the meter, and the height of the horse tea is more than 1.7 meters, which is less than 2 meters.

The SI kilogram is a unit of measurement of the mass of an object, and the weight of macha is sixty kilograms, that is, sixty kilograms, which is one hundred and twenty catties, that is, one thousand two hundred taels. According to the calculation of one or two pieces of meat, Ma Cha can be sold for a lot of money with a piece of meat.

There are also SI units such as temperature units open, the quantity unit of matter in moles, the unit of electric current in amps, the unit of time in seconds, and the unit of luminous intensity. These units mentioned are all basic units, it is troublesome to measure objects, and the standards are different in many places, and with a unified standard, it will be much more convenient to communicate with each other.

For example, I need to know the distance between the earth and the sky, how many kilograms my aircraft weighs, how long a second can travel, what is the temperature in the universe, whether there is an ampere of current above my head, I need to know the amount of material in the universe, what is the luminous intensity of the star, I need to understand, I have to figure everything out in order to drive the aircraft to space, I can't joke with my life。

I need to understand dimensions, and do dimensional analysis, understand dimensionless quantities, and consider some dimensionless parameters to make sure that nothing goes wrong.

When I think about an object, I'm thinking about the components of the object, a desk, which is made up of a tabletop and legs, which are the parts that make up the object. And inside the object, there are atoms, and there are nuclei in atoms, and people will always find smaller things that make up matter. So there are electrons, protons, neutrinos, quarks, which are the points that make up the position. There is a theory that the existence of the constituent matter is a string-like thing, and those who have played the piano should be familiar with the strings, and the strings mentioned in this theory are things that resemble strings. Since what the human eye can see is limited. Just as the sound that the human ear can hear is limited, people need to use real equipment such as microscopes to see a bacterium, and of course people can't see that string.

People have always been skeptical of such things, which are difficult for people to prove their existence or not. However, we should not just be in a state of doubt and not move forward, but should make further analysis of theory and reality to clear the clouds and find a correct answer.

String theory seems to explain more phenomena, and the same is true for superstring theory. But these theories are just a theory, and some of the ideas mentioned in the theory need to be accurately confirmed.

After Ma Cha took a sip of coffee, he put the information in his hand on the table that introduced Femi, boson, and proton, which was not much, and the three introduction materials added up to a total of only three pages, and after he put down these materials, he took another sip of coffee.

Those physical units that came to mind earlier. It's a thing that makes me think, if I had to measure my height. I would take a ruler, either by myself or by someone else, and from my feet to my head, I would be able to measure my height. If I want to weigh myself, I can find a scale. I can tell how much I weigh by weighing it on a scale.

If I want to know how fast I run, I can run a lap around the playground and have someone else record how long it takes me to run a lap. Dividing the length of a lap by the time it takes, that's how fast I run.

These are all relatively easy things to do, but if I want to know the height of a tall building, is it a little difficult to measure, if I want to know the height of a mountain, is it also difficult, if I want to know the weight of a mountain, how do I know how heavy the mountain is?

And what if I want to know the height of the Earth, what if I want to know the weight of the Earth? It's not as simple as measuring my height and weight.

What if I want to know the shape, the height, the length, or any other characteristic of the universe? What if I want to know how much the whole universe weighs? How do I know? How do I measure it?

I think that problems will always be solved, and in the face of problematic things, there will always be a way, and if you use methods to solve problems, problems will be solved, and people will get answers.

Protons are subatomic particles, they have size, they have mass, how can I measure their mass, size?

When I think about it this way, I realize that from very big things like the universe, which I don't understand, to very small things, like protons, I don't understand big things, small things that I don't understand, big and small things that I don't understand, what do I know? I find that I don't even know myself.

My name is Ma Cha, this Ma Cha is just a code name for me, you can call Ma Cha, he can be called Ma Cha, everyone can call Ma Cha, who is Ma Cha? Is Ma Cha me? Am I Ma Cha?

Draw a dot on paper, some say, it's a dot, and I'm going to say, it's a world. A very small point, looking bigger, is a world, a world at a time.

If I am also a point, don't look at me at one meter or seven, I can also be a point, I am a point, I enter the point that I draw on paper, I enter a little world, this little world, is a world of zero dimensions, also called a world of zero dimensions.

Draw a line on the paper, I'm still a little bit, I enter this line, I'm into a one-dimensional world, I can move forward or backward.

If it's a flat world made up of two lines, when I enter this world, I'm entering a two-dimensional world. If three coordinate lines represent a three-dimensional world, and I enter this world, I enter the three-dimensional world. I don't believe that the universe is what I see it is, it has four dimensions of space-time, and it has five dimensions, and many dimensions, four-dimensional, five-dimensional, eleven-dimensional.

I always want to know more about the universe, just like when I was an adolescent I really wanted to know about girls, and the more I thought about the universe, the more I didn't understand it, and I found that the universe was extremely vast, and some people said that it was expanding, and I thought, whether it is expanding or contracting, its boundaries, are unimaginable.

The universe is so difficult to understand, we need to understand the universe through some methods, and some people have created some theories to find a unified truth and obtain the truth, such as the ultimate theory of physics, the theory of membranes, which is their effort.

Ma Cha's coffee cup is placed on a piece of paper, this paper has a side of text, the text introduces the cosmological constant, and Ma Cha is thinking about the marriage of aliens, except for Tianyixing, are there really female aliens on other planets?

The redshifted and blueshifted data were placed below the cosmological constant, and Ma Cha had no intention of reading these materials because he couldn't understand them.

If you look up at the starry sky, you will see so many stars, and it is said that these stars make up only a small part of the mass of the universe, and most of the mass of the universe is mysterious dark matter. Dark matter and dark energy make people very curious about whether they exist or not. What dark matter and dark energy are, people don't know yet.

There are also people who say that the multiverse is a parallel universe, and it seems that someone is trying to find evidence of the existence of parallel universes.

Not to mention the other universes where there may be zài, that is, the universe where Ma Cha is currently located, it is difficult to explore it, first of all, fuel is a problem, go to the stars in the sky, the distance is far away, how many light years at every turn, if you use chemical fuel as a propulsion to propel the aircraft forward, it is too laborious, it is possible to go to a star It will require tens of millions of tons of fuel, such a number is astronomical, and it is not consumable, so much fuel, where to get it, even if you get it, it is not easy to get.

So some people start with antimatter, this antimatter, that is, the internal composition such as protons, electronic charges and positive matter are opposite, what happens when this antimatter meets positive matter? Theoretically, they will annihilate and release a huge amount of energy, if there is such antimatter, if antimatter is used as the source of energy, then it can replace tens of millions of tons of fuel, how many grams of antimatter, its energy cannot be underestimated.

But at present, this antimatter has not been completely confirmed, but some antiparticles in the microscopic world have been confirmed, and they do exist, and whether there is a large amount of antimatter in the universe, whether there are planets composed of antimatter, whether there are other celestial bodies composed of antimatter, this is not easy to say, people are exploring.

Ma Cha knew Shirahoshi, and according to Shirahoshi, one of his friends was convening people to build a machine qì, which could be put into space to collect antimatter information, and detect the existence of antimatter with extremely high sensitivity, and in the face of the universe, people want to understand dark matter, dark energy, and antimatter, and people are exploring.

In the process of exploration, people will definitely make new discoveries, and there will be great development in human science, and at that time, new units, new SIUs, and new SIUs in physics will definitely be born, which can be expected.

The universe is very mysterious, people live on the earth, the earth is in the universe, but people don't understand the earth and the universe.

The origin of the universe is not very clear, and the Big Bang, which has been passed down by word of mouth, is nothing more than a doctrine, and this hypothesis will of course find a lot of evidence to prove its correctness, but no matter how much evidence is found, it is likely to be challenged. People have to recognize the revolutionary nature of things. How the universe originated may not be entirely correct.

Human beings are too ignorant, this is the conclusion of comparison, compared to the vastness of the universe, to realize that human beings are so small. Human life is limited, but the path of exploration is eternal. (To be continued......)