Physics

Subject category

First-level discipline , professional name: Physics Professional code: 070200 Division/category: Science discipline/category: Physics

content

Physics, referred to as "physical." The original word comes from Greek (the original is φυσικός (physikos): natural, and φυσικός is a variant of φύσις (physis): Nature), the original meaning is natural. In ancient times, Europeans called physics as natural philosophy. In the broadest sense, it is the study of natural phenomena and laws. Physicists study the state of matter existing in different spaces and times, study the most general laws of matter movement and the basic structure of matter. In modern times, physics has become the most basic subject in natural sciences. Physical theories are usually expressed in the form of mathematical relationships. Physics theories that have been proven for a long time are sometimes called physics laws. However, like all other scientific theories, these laws can never be proven, and their correctness can only be tested through continuous experiments.

Physics is a natural science that focuses on the study of matter, energy, space , and time, especially their respective properties and their interrelationships. Physics is the knowledge about the laws of nature; more broadly speaking, physics explores and analyzes phenomena that occur in nature to understand its rules.

Physics is the subject of studying the most general laws of motion and the basic structure of matter. As the leading discipline of natural sciences, physics studies the most basic forms and laws of motion of all matter from the universe to elementary particles, and thus becomes the research foundation of other natural science disciplines.

Research object:

Physical phenomena, structure of matter, interaction of matter, law of matter movement.

Theory

3D Complex Model of Universe

Classification

Divided by spatial scale:

Quantum mechanics, classical physics, cosmic physics.

Divided by rate:

Relativistic physics, non-relativistic physics.

Divided by object size:

Microscopic, mesoscopic, macroscopic and cosmoscopic.

Divided by movement speed:

Low speed, medium speed, high speed.

Divided by research method:

Experimental physics, theoretical physics, computational physics.