(Today's content is a bit brain-burning. Please slow down the pace and read it slowly.)

The so-called four basic forces known to humans (there are other basic forces that humans have not yet recognized in the universe):

1. The electromagnetic interaction force is the force that is transmitted between charged particles or magnetic moment particles through the electromagnetic field (Maxwell's equation unifies the two interactions between electricity and magnetism, and we can easily convert electricity and magnetism).

2. Weak interaction force is manifested as the β decay of neutrons. That is, neutron decay becomes protons, electrons and electron neutrinos. (This is more difficult to understand. In addition, scientists have proposed a normative theory of the unity of weak force and electromagnetic force, and unified electromagnetic and weak interaction force. They are actually two aspects of the same force, also called electric weak force.)

3. Strong interaction force is the strongest among the four basic forces. The earliest scientists called the nuclear force between protons and neutrons a strong interaction force, that is, the force in which protons and neutrons combine to form a nucleus. Later, with the development of science, we further realized that a hason (i.e., protons and neutrons) are composed of quarks, so the strong interaction force is the interaction force between quarks, which is a short-range force.

4. Gravity refers to the fact that any two particles are attracted by forces in the direction of the connecting center line. The magnitude of gravity has nothing to do with the chemical composition of the two objects and the type of media therein.

We can briefly compare the strengths of the basic forces of the four:

Let's first assume that the intensity of gravity is 1;

Then the size of the weak interaction force is 100,000 (25 zeros in total);

The electromagnetic interaction force is 100,000 (36 zeros in total);

Strong interaction force is 100,000 (38 zeros in total).

It is incredible that it can drag matter to form galaxies, stars, black holes and other celestial bodies, and the ubiquitous gravity in this vast universe is actually the weakest known force in the universe!!!

At present, scientists can describe the three basic forces besides gravity by quantum theory. The formation of electromagnetic, weak and strong interaction forces is explained by assumptions that they exchange quantums with each other.

However, the formation of gravity seems to be another matter. Scientists have imitated methods of explaining electromagnetic forces to explain gravity, and assumed that the quantum of matter exchange at this time is called gravitons, but this attempt encountered many theoretical difficulties.

To put it concisely, the scientific community cannot explain the causes of gravity at present, and it is even questionable whether it has gravity!!

There are still many different opinions in the scientific community about the principle of gravity generation, and most of them are still at the theoretical level. It takes a long time of research and argumentation to form a well-known truth.

So, how exactly does gravity come about? This should be regarded as one of the greatest unsolved mysteries in the scientific community.

Although this research is extremely difficult, Yuan Shichen firmly believes that with the continuous development of Earth civilization, human beings will definitely uncover the mystery of universal gravity and create a real artificial gravity system through technological means!

Just like in the past thousands of years, although people can see birds soaring in the sky, they do not know how birds use aerodynamic principles to fly.

Later, with the continuous advancement of science, the Bernoulli effect and other principles became known step by step. Nowadays, humans can already use external forces to fly to the clouds and swim among the blue sky. Even elementary school students can make airplane models.

In order to make a breakthrough in the theory and application research project of alien artificial gravity field as soon as possible, Yuan Shichen almost opened fire, as if he was back to the era when Tsinghua University was writing books.

Unlike the other three project team members, Yuan Shichen's theoretical research direction is fully developed. In addition to covering the research directions of the three of them, he is also conducting various divergent thinking, constantly proposing various new theories and repeatedly conducting cautious verification.

This is something that ordinary people cannot do, because no scientist can dabble in such a large amount of scientific knowledge in a short period of time, let alone mastering and mastering them.

Others may not know the detailed situation, but Old Goethe saw it. In just a few months, Yuan Shichen had read all the works and scientific research theories in the world related to gravity research.

So much so that Goethe began to suspect that Yuan Shichen was just browsing the information briefly and browsing the information at a glance.

But soon, Goethe was shocked to find how superficial his ideas were. Almost every week, Naochen proposed a unique new theories based on the research of his predecessors, and combined with the operation model of alien artificial gravity equipment, he quickly completed verification in various super laboratories.

Although Nai Chen still has not found the truth, at least nearly ten possibilities have been ruled out and is constantly approaching the final truth.

With Goethe's simple scientific literacy, he was completely unable to understand these, but he was still strongly shocked by Yuan Shichen's super learning ability and scientific research level. The so-called "Unclear" is probably the most appropriate description.

"Does gravitons really exist?"

This is a problem that Yuan Naichen has been considering recently.

"If such tiny and mass-free particles really exist and are widely distributed in the universe, how can I find signs of their existence?" Yuan Shichen was full of doubts about this. "With current technology, it is still difficult to measure tiny particles without mass."

"Maybe you can use the super cyclotron in the core area of ​​the base to explore this tiny particle." Hata Kazuki made a decision and immediately set off for the core area of ​​the Pacific Base of the Interstellar Exploration Alliance.

The process of discovering that some microscopic particles is a bit like time travel, and scientists try to use large devices such as cyclotrons to drive microparticles to collide at the speed of light, thus creating new microparticles.

This process is like simulating everything that happens when the universe is born.

In the early stages of the birth of the universe, various particles were in a high-energy state, and protons and neutrons were also formed during that period.

In the super laboratory in the core area of ​​the Interstellar Exploration Alliance, Harashi Chen is repeatedly conducting several elementary particles collision experiments using a 10 trillion volt electron accelerator and the latest large hasron collision accelerator.

Harashi Chen hopes to discover microscopic particles such as Siegers mesons, bosons (distant relatives of gravitons), which may be the key to help uncover the principle of gravity.

However, like previous attempts, this is likely to be a protracted and long-lasting job of catching water in a bamboo basket.

In Hatochen's opinion, the current research on gravitons is still in the science fiction stage, and it is even a bit like a story in science fiction novels.
Chapter completed!