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What is physics?
Physics is a subject that studies the most general laws of material movement and the basic structure of material. Physics, as the leading discipline of natural science, studies the most basic motion forms and laws of all substances from the universe to elementary particles, so it has become the research basis of other natural science disciplines. Its theoretical structure takes mathematics as the working language and experiment as the only criterion to test the correctness of the theory. It is the most accurate natural science discipline today. ?

Physics is a regular summary of people's understanding of material transformation in inanimate nature. There should be two kinds: movement and transformation. On the one hand, in the early days, people expanded their sensory horizons. On the other hand, in modern times, people indirectly understood the internal composition of matter by inventing and creating scientific instruments for observation and measurement and the results of experiments.

Extended data:

The main research fields of physics are divided into:

1, condensed matter physics

Studying the macroscopic properties of matter, these phases contain a large number of components, and the interaction between team members is very strong. The most familiar condensed phases are solids and liquids, which are formed by bonds between atoms and electromagnetic forces.

2. Atomic, Molecular and Optical Physics

Study the interaction between matter and matter, light and matter within the scope of atomic size or several atomic structures. These three areas are closely related. Because they use similar methods and related energy levels.

3. High Energy/Particle Physics

Particle physics studies the basic components of matter and energy and their interaction; Also known as high energy physics. Because many elementary particles do not exist in nature, they only appear when they collide with other particles in a high-energy particle accelerator. According to the interaction standard model of elementary particles, there are 12 elementary particle models of known substances (quarks and light particles).

4. Astrophysics

Astrophysics and astronomy are physical theories and methods used to study the structure and evolution of stars, the origin of the solar system and related problems of the universe. Because astrophysics covers a wide range. It uses many physical principles. Including mechanics, electromagnetism, statistical mechanics, thermodynamics and quantum mechanics. 193 1 year, Karl discovered the radio signals from celestial bodies.

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