Meson is a physical term, and the word in life is called medium. Air, solids, and liquids are required for sound propagation. The force of the quark requires gluon, but light does not require a medium. In a vacuum, light can still travel. The transmission of force requires particles, whereas the change in energy depends on matter. A concept that is somewhat similar to the medium is the tool. The medium can be natural, while the tool is mostly artificial. Since the medium is generally naturally occurring, it does not become a tool.

During the Spring and Autumn Period, Qi Henggong Xiaobai had just died. The monarch of Qi captured the king of Lirong in the land of Rongdi, and Lirong gave Li Ji to the monarch of Qi in order to save his monarch. Since then, the monarch of the Jin Kingdom has been obsessed with Li Ji, and Li Ji has become more and more favored. At this time, the Jin monarch had two sons. They were all adults, and the Jin monarch also intended to choose one of his two sons as the successor to the throne. Li Ji naturally knew, so he made the monarch of Qi have a bad impression of his two sons by blowing the wind on the pillow. Then, he framed the two sons on trumped-up charges. The two sons got the news and fled to other countries. One of them is Jin Wen Gong Chong'er. He has been in exile for more than 20 years, and Jie Zitui has always been by his side. Later, Chong'er succeeded to the throne and rewarded the ministers. However, only the meson push was forgotten. Someone reminded Chong'er, and he remembered. So, I sent someone to find Jie Zitui. It turned out that Jie Zitui was in a certain mountain and refused to come out. Chong'er was distressed, and others offered advice that if the mountain was set on fire, Jie Zitui would definitely come out. Chong'er did according to the plan, and set fire to the mountain. Jie Zitui refused to come out and was burned alive. Heavy Ear was annoyed and scolded himself for how he was. In order to commemorate Jie Zitui, Chong'er designated this day as a holiday. This festival is the origin of the Cold Food Festival.

In terms of the division of the world, there are macro, meso, and micro. And the human world is meso. In people's impressions, only big is good. And small is not good. But is that really the case? I think that the energy released by a particle reaction is less than one-thousandth of the energy of a celestial body larger than the Sun, but it is a lot compared to the energy released by some explosives. I often say that one thing, a cell is small, can you catch it? The answer is no. Some people think that giant means super state, but I think big is also a super state. In fact, the more basic a particle is, the more energy it releases to carry out particle reactions. It's like a quark, I don't know how much energy it will release after making it react at the quark level?

By the way, last time I talked about potential. Whereas potentials are divided into scalar potentials and vector potentials, and gravitational geopotentials are vector potentials.

There is also the fact that molecular energy levels are divided into electronic energy levels, rotational energy levels, and vibrational energy levels. There is also a discrete energy level that I don't know if it is related to the molecule.

There is more than one trough in the waves, and there is more than one branch in the trees. Naturally, there are many people to discuss, and the audience is indispensable. Mushuanglin, an interesting name. Let's welcome our audience. Mizukawa said.

Mu Shuanglin didn't say much, but sat down.

The encyclopedia says that mesons are divided into π mesons, k mesons, and η mesons. Then, it is said that the k-meson exists for a short time and decays into a smaller one. I was thinking π who is smaller or η meson? When I read the entry for π meson, I saw that π meson is the lightest meson. Does light mean small? Cotton is light because of the density. However, it is bulky. What we usually mean by size refers to volume, not mass. Since it is the lightest, the mass is the smallest among the mesons. However, this does not lead to π the volume of the meson is minimal. Then there is an encyclopedia that says that ρ meson is the lightest strongly interacting particle. I guess aren't all mesons hadrons? Since baryons are called baryons, are there any heavier mesons than them? Strongly interacting particles are not the same as hadrons. In the entry for heavy mesons, it is a heavier meson than π mesons. Since other mesons and k mesons are heavy mesons, it is impossible for k mesons to decay into other mesons. In this way, the k meson can only decay into π meson.

Hadrons are particles that undergo strong interactions, including mesons and baryons and particles composed entirely of gluons. Glue balls are made entirely of glue, but only in the imagination of people. At the moment, it has not been discovered. The ρ meson is the lightest strongly interacting particle, while the hadron is the particle that undergoes strong interaction. I think ρ mesons should be lighter than glue balls.

Knowledge is passed from one person's head to another's head, and so knowledge is preserved. The discussion can't be a one-word discussion, so now it's the two of you. Du said.

μ meson is the most legendary particle. Originally, physicists thought it was a meson, but experiments proved that it was not a meson. So, what's going on? From this, I thought of Pluto. At first, it was considered one of the nine planets of the solar system. However, later experiments proved that its mass was only 0.24/100 that of Earth. A small mass does not mean anything, and its inclination to the ecliptic plane means that its orbit intersects with the orbit of the Earth. This shows that it does not have an independent track. The reason why μ meson is not a meson is because its ability to perform strong interactions is too weak.

HYPERONS ARE PARTICLES THAT ARE HEAVIER THAN NUCLEONS SUCH AS PROTONS AND NEUTRONS, AND HAVE Λ, Ξ, Σ, Ω. Their decay products all have π mesons, all of which are classified as positively charged. Six said.

Why is η meson not a boson, but a fermion? What causes its spin number not to be an integer?

Is there a connection between π meson and π in mathematics? I don't think so, it's pure coincidence. Margarita said.

Trees have tops, and oceans have edges. Sometimes, the discussion ends with itself. Take the throne home and think of new ideas. Mizukawa said.