How is the force generated? (details)

The mechanism of force generation refers to the causes and how to generate force.

For example:

1, gravity: it is the mutual attraction between any objects. In contrast, gravity is very weak for general objects. But it is a kind of remote force, which plays a decisive role in the formation of the universe and celestial bodies. For example, the formation of the solar system and the Milky Way depends on gravity, and cosmology cannot be separated from the theory of gravity.

2. Electromagnetic force: Electricity is the interaction between two charged particles or objects, and there is a magnetic force between two moving charges.

3. Weak force: There is also a short-range interaction between elementary particles. The distance of weak force is shorter than that of strong force, and the strength of force is much smaller than that of strong force. Weak force plays an important role in β decay, in which electrons and neutrinos are released, and there is only weak force between them. There are also weak forces between other elementary particles.

4. Strength: The nucleus consists of positively charged protons and neutrons. Why doesn't Coulomb repulsion between proton positive charges scatter the nucleus? That's because there is a strong interaction between nucleons, which can overwhelm Coulomb repulsion (nuclear force). On the scale of the nucleus, the intensity is much greater than that of coulomb force, but it is a short-range force. When the distance between nuclei is too large, the intensity drops rapidly and disappears.

In addition, strong and weak forces are short-range forces, and electromagnetic force and gravity are long-range forces.