Bowen and Joel have just achieved many good results in Heisenberg's calculation, but they have received copies of papers written by young British physicists he doesn't know. This man's name is Paul Dirac (1902- 1984). Then Dirac published his first paper on quantum mechanics. To Bowen's surprise, he and Joel have included more abstract mathematical language than the one used in the article. When Dirac visited Cambridge after receiving hay fever in Heisenberg, he learned about matrix dynamics from a small report. Dirac always lingers on Heisenberg's strange multiplication rule PQQP when he walks. This reminds me of the classic poisson bracket. Is it similar to this?

Quantum mechanics was born by Heisenberg, Schrodinger and Dirac. Although Dirac was less famous than Heisenberg and Schrodinger at that time, the young Englishman soon made his mark in the Jianghu. Dirac's mother is English and his father is a Swiss immigrant. For example, as a French teacher, my father showed a strict and dictatorial attitude towards his family. For example, children are required to speak French, so that family members rarely talk to each other and there is no social atmosphere at home. Young Dirac is common in scenes where parents and siblings say nothing. Every family knows this will happen! Dirac and his brother Felix are studying engineering in a university. The two brothers passed each other in the street and didn't talk to each other.

Natural wonders: magnificent buildings, vast Yuan Ye, gurgling water and mysterious stars. They constitute everything in a harmonious universe. They are different in size, distance, state and weight, but they are all made of matter. What is matter? From the point of view of particle physics, matter is composed of molecules. Accurately speaking, molecules are not the smallest material particles, but are made up of atoms. Atoms can be divided into nuclei composed of protons and neutrons and extranuclear electrons rotating around the nuclei. Protons and electrons are charged particles, protons have a positive charge of one unit, electrons have a negative charge of one unit, and neutrons have no charge, so they are neutral particles. Protons, neutrons and electrons are the basic particles that make up the complex material world, and they are "bricks for building everything". But this "brick" is not the whole universe. When scientists went deep into the field of elementary particles and took root, new substances shook vaguely before their eyes. This is antimatter.

What is antimatter? Just as protons, neutrons and electrons combine to form atoms, antiprotons, antiprotons and antiprotons combine to form a semicircle. Matter composed of semicircles is antimatter. When you look in the mirror, if you really exist in the mirror and appear in front of you, some people call it "half you".