The word "physics" comes from the Greek word φ υ σ ι κ, which means nature. In ancient times, Europeans called physics "natural philosophy".
In the broadest sense, it is the study of natural phenomena and laws.
The word "physics" in Chinese and Japanese originated from Fang Yizhi's encyclopedia "Little Knowledge of Physics" in the late Ming and early Qing Dynasties.
In the field of physics, study the basic elements of the universe: matter, energy, space, time and their interaction; By analyzing the basic laws and rules, we can fully understand this system.
Physics is composed of the study of natural philosophy which is very similar to the classical times. It was not until19th century that physics was separated from philosophy and became an empirical science.