-
According to the current understanding of the structure of the particle world, according to the standard model, the particle world is composed of 62 kinds of particles, of which 60 kinds have been confirmed by experiments, and there are 2 kinds of evidence of their existence that have not been observed in experiments, which is the limit of segmentation at this stage.
These 62 can be divided into three categories:
1) Canonical boson: 3 kinds of basically interacting medium particles, such as gluons and photons, a total of 13 kinds.
2) Fermions: particles with spin quantum number j=l 2, including leptons and quarks, a total of 48 kinds.
3) Higgs particles: Particles with zero spin quantum numbers.
-
Upstairs is so irresponsible.
This question is relatively profound, and I can't explain it in a sentence or two. I suggest you ** A Brief History of Hawking (PDF color page version, iask can be reached**), which contains a detailed explanation of elementary particles.
-
It is generally believed that matter is made up of molecules and atoms, which in turn are composed of nuclei and electrons, and the nucleus of atoms is composed of neutrons and protons, and protons and neutrons are composed of quarks, and quarks are divided into positive quarks and negative quarks Positive quark band 2 3e positive charge Negative quark band 1 3e negative charge Neutron consists of one positive quark and two negative quarks Proton has two positive quarks and negative quarks At present, quarks are the smallest unit.
I hope you understand a little bit by now.
-
It is generally believed that matter is composed of molecules, atoms, which in turn are composed of nuclei and electrons, and can no longer be divided at present
Would be greatly appreciated, hehe
-
Yes. Quantum can be thought of as elementary particles. But that's only theoretical. Not confirmed.
-
Meaning: It contains the idea of the infinite divisibility of matter.
1. The infinite divisibility of matter is a concept associated with the infinity of the hierarchy of matter.
2. The opposite concept is the finite divisibility of matter.
3. The ancient Chinese expressed the idea of the infinite divisibility of simple matter very early.
4. The deepening understanding of the structure of matter also shows that the idea that matter in nature is infinitely divisible is correct.
5. Of course, based on modern science, people also realize that this kind of separability is not a simple quantitative division of matter, but a qualitatively different and infinite level of division and unity in nature.
-
Personally, I think that matter is infinitely divisible, because what everyone wants in their hearts is different, and there is no way to control people's desires, everyone will demand more and more, and they will want more and more, so I personally think that material is not infinitely divisible.
-
According to the current physical research, matter cannot be divided infinitely, but it may not be possible to overturn this conclusion with the deepening of physical research in the future.
-
Definitely yes, because matter can reach infinitesimal size.
-
Are matter, time, and space infinitely divisible?
-
Elementary particles refer to the smallest and most basic units of matter that people know, that is, the smallest volume of matter without changing the properties of matter. It is the basis of all kinds of objects, and it does not conclude that it is not a substance because it is small. However, after the quark theory was proposed, people realized that elementary particles also have complex structures, so the term "elementary particles" is generally not mentioned.
Depending on the force, particles are divided into three categories: hadrons, leptons, and propagators.
Elementary particles are much smaller than atoms and molecules, and cannot be observed with the highest possible electron microscopes. Protons and neutrons are only 1/100,000 the size of an atom. Leptons and quarks are smaller in size, less than one-ten-thousandth of a proton or neutron.
Theoretically, it is infinitely divisible, but the study of particles continues, so it depends on the results of physicists.
-
The fact that atoms are chemically inseparable does not mean that the entire structure of matter is indivisible. Scientific developments have long proven that atoms are divisible in the structure of matter. The inseparability of atoms in chemistry and the separability in the structure of matter express the dialectical unity of atoms divisible and inseparable.
When the chemical atomism theory was proposed, people were limited by the scientific level and metaphysical view of nature at that time, and they thought that it was a scientific discovery of the inseparable and unified "primordial matter" predicted by the ancient Greek philosophers, and they still used the name "atom". Engels once made a profound analysis of this kind of thinking, proposing that atoms should never be regarded as simple things or the smallest known physical particles, and put forward the idea that the material world has an infinite hierarchy, holding that atoms are only one of the levels, and matter is infinitely divisible.
The facts of subsequent scientific developments confirmed the correctness of Siggs's assertion. At the end of the 19th century, Thomson found that cathode rays would be deflected under elliptical or electric field explosion, and according to the direction and magnitude of the deflection, the particles of this kind of rays were negatively charged, with a mass of only 1 1800 helium atoms, and named it "electrons". The electrons are much smaller than the smallest atom i.e., the hydrogen atom.
This shows that electrons are inside atoms, and atoms can no longer be seen as the smallest particles. Since then, the development of science has continuously proved the divisibility of atoms. The more than 300 kinds of particles that have been discovered so far are a good proof of this.
The facts of scientific experiments have proved that the indivisibility of atoms is relative, indivisible in a certain specific range and in a specific sense; And beyond a certain range is divisible, and we can't take a metaphysical approach and just look at a certain range of indivisibility and compare it absolutely. This method of thinking is not in line with reality and will bring great harm to scientific research.
-
Are matter, time, and space infinitely divisible?
-
The so-called elementary particles are the most basic units that make up matter.
According to the different forces, particles are divided into three categories: hadrons, leptons, and propagators.
Hadron is the general term for all particles involved in the action of strong forces. They are made up of quarks, and there are five types of quarks that have been discovered, and they are: upper quarks, lower quarks, singular quarks, late quarks, and bottom orange quarks.
The reality is really cruel, the reality is really realistic, and now people in this society are working hard for money... For love, although there is hard love, it is a minority after all, and most of it is because of money, which may be the reason for the high divorce rate now... However, it is very important to find a suitable object for yourself, as long as two people really cherish each other, there are many opportunities to make money now, down-to-earth, and there will still be a better tomorrow when they work together...
I think. 90 percent of the time, but some can't be ruled out. Matter is the basis of life. Without material security, how can we live a good life? Don't people like that? >>>More
Ion Coexistence To determine the problem of ion coexistence, you should first look at the prerequisites of the test questions, such as "in a strong acidic solution......"...... in a colorless transparent solution"...... in a solution of C(H+):1 10-13Mo1 L-1 ionized by water"...... due to redox reactionsAnd so on, and then analyze the interaction between the ions. >>>More
Let's recognize the fact that there are no completely immaterial girls at all, all people live in this materialistic era, we are all kidnapped by materialism, and no one can be a green lotus that comes out of the mud alone. >>>More
Introduction: Environmental protection coating is a kind of coating whose performance and safety indicators are in line with the national "Technical Requirements for Environmental Labeling Products". Everyone generally chooses environmentally friendly paints for home decoration, because compared with other paints, environmentally friendly paints are non-toxic. >>>More