The discovery of the atomic nucleus was a 20th century thing, whereas before only the atom was known. After the discovery of the nucleus, physicists discovered protons and neutrons. Whereas, protons are derived from the discovery of electrons first. We know that the number of protons is equal to the atomic number, but there are different isotopes due to the difference in neutrons.

Mathematics is the foundation of physics. There are no negative numbers in nature, but there are particles in physics that have negative spins. The conservation of symmetry corresponds to the number of protons and neutrons, and the odd nucleus, even and even nuclei, etc., it is said that the depth of yin mathematics is not imaginary.

We know that electrons are elementary particles, so there should be no internal structure. But what is the electron nucleus? This is not too one-sided. Electrons can split into spins, orbitals, and holes while performing charge spins. So, which kind of particle is inside the electron nucleus? As I said earlier, holes are caused by the absence of valence electrons, which are in the valence band. Whereas, the valence band is in the molecule, so the hole is not in the hole. Spin is spin with spin properties, in other words, there is a similarity between the spin of the electron and the spin of the spin. And the orbital sub is naturally related to the orbital position. The orbital would not be in the outermost shell, so it could only be in the electron nucleus.

There is a special kind of atomic nucleus that is a mirror nucleus, which is that the number of protons and neutrons is interchanged. We know that the number of protons determines the type of atom and the number of neutrons determines the type of isotope. Then, after they are swapped, the species is reversed. Are there any examples? Yes, li and be are. Deuterium and helium are. Tritium, the isotope of hydrogen, does not have a mirror nucleus. It follows that not all isotopes of the elements have mirror nuclei.

When it comes to mirror cores, everyone thinks it has nothing to do with math. But when it comes to even nuclei, I'm afraid it has something to do with mathematics. Actually, it's not complicated. Even the number of protons and neutrons is even, and the same is true for odd-even and odd nuclei. A mirror transformation is the exchange of the number of protons and neutrons. All three of the above are essentially unchanged by mirror transformations, such as the mirror kernel of the even-even nucleus or the even-even nucleus.

We know that Li and Be are mirror nuclei, so when they meet, do they become even nuclei? It depends on what kind of nucleus the mirror nucleus is. If it's an odd-even nucleus, it ends up being a singular nucleus. If it is a singular nucleus and an even-even nucleus, then it will eventually become an even-even nucleus.

Suddenly, I thought of peach pits. There are many sunken parts on the exterior of peach pits, so why is that? Some peaches have soft peach thorns inside, and the peach thorns go deep into the depression. The more and deeper the depression, the stronger the connection between the pulp and the peach pit.

Speaking of nucleus, the nucleus has to be mentioned. The nucleus is the marker that distinguishes eukaryotic cells from prokaryotic cells. It is the former that has a nucleus, and the latter that does not. Of course, there are also eukaryotic cells such as red blood cells that do not have a nucleus. The nucleus was first proposed and discovered by the Scottish botanist Brown, the proposer of Brownian motion.

The last thing to mention is the nerve nucleus. Although there are nerves in the hands, feet, and eyes, the nucleus can only be found in the central nervous system. The nerve nucleus is a brain structure one level higher than the neurons, which belongs to the real control center of the brain. The various physiological behaviors of people can be explained by the changes in the nerve nucleus.