The day before yesterday we discussed the law of conservation of energy, so today we will discuss the conservation situation. If everybody has something, say it.

Since I'm the first, I'll start with that. When it comes to conservation of energy, it is necessary to mention the conservation of mass. According to Einstein's mass-energy formula, mass is a form of energy.

Since energy is conserved, then mass is also conserved. Sometimes, they are collectively called conservation of mass and energy.

The second is the conservation of momentum. As the name suggests, it is the energy that causes the movement of an object. Actually, in crystal mechanics, quasi-momentum is conserved.

Since the object is not airtight, as well as heat transfer and force transfer. So, it is not easy to achieve true conservation of momentum.

The third is the conservation of angular momentum. To be honest, I used to think that the conservation of angular momentum was a type of conservation of momentum, but this was not the case.

Specifically, the method of derivation is different. The conservation of momentum is derived from the invariant property of the translation of space, and the conservation of angular momentum is derived from the rotational symmetry of space.

The fourth charge is conserved. In a closed system, the number of positive charges must be equal to the number of negative charges.

After Mizukawa finished speaking, everyone had a feeling that they were not having fun. Yours are too ordinary, I'll talk about a few special ones.

The first singular number is conserved. Ever heard of singular numbers? I don't know? Let me tell you about it. Singular numbers are mainly used to describe singular particles, while the singular number of ordinary particles is zero.

When normal particles and strange particles react, the total number of odd numbers remains unchanged. Second, particles have leptons and baryons.

However, baryon is not necessarily heavier than a baryon. Since conservation has the same principle that is not much different, the conservation of baryon numbers can be understood in terms of the conservation of singular numbers.

Third, the lepton number is conserved. It should be the same as the conservation of singular numbers, so I won't explain it.

Fourth, the conservance of the same spin. What is Isospin? It is the quantum number of particles with the same spin and the same universal symmetry, but with the same charge number.

Since the universe is mentioned, it is naturally related to the universe. In weak interactions, the cosmic symmetry is not conserved.

Similarly, the cospin is not conserved. So, in strong interactions, why is the universe conserved?

If you want to know the answer, read more! That's pretty much it. Dueñas said a few words quite confidently.

。 I'll also talk about a few, see what you think? The first is the conservation of positive and negative transformations. In fact, they are symmetrical transformations.

When it comes to symmetry, you probably get the idea. That's right, it has a lot to do with math. Second, CP joint transformation is conserved.

The c-transform is charge conjugation, which is derived from the conservation of charge. The p transformation is the left-right hand transformation.

This union is a multifaceted symmetry transformation. Second, color quantum numbers are conserved. Color quantum numbers are exclusive to quarks and are not for other particles.

If you have to find an easy-to-understand concept, it's Selotus. Although the color quantum number and the color charge are not exactly the same, it does not prevent us from making comparisons!

Thirdly, the number of flavors in the layer is conserved. What are the layers? Some physicists in China believe that quarks are not elementary particles, so they are layers.

So, what is the Ajiko number? The number of flavors, also known as the number of flavors, refers to the number of electrons, μ, τ and three types of neutrinos.

After Liu Zifeng finished speaking, the three of them were stunned. Margarita spoke, though. She said: Overload, J/ψ particle number, magnetic moment, magnetokinetic potential, and magnetic current are all conserved, so do you know these?

I don't know! We're going to meet these. Okay, today's discussion is a bit tough. Then let's all go read the book!