The difference between concepts and definitions in physics, the definition of physics

Concepts and definitions in physics are the same as those commonly spoken.

The concept is that people know the thing itself, and I take it literally, that is, people think about what the thing itself is.

The definition is completely different from the concept, which means what things are artificially called. Note that it is a man-made rule. For example, acceleration.

The definition is how much the velocity increases per second, and the unit is meters per second, which is artificially defined, and can also be defined as centimeters per second. Another example, let's define.

For example, we divide the time of the day into 24 parts, each part is 1 hour, this is the definition of hours, and the day can also be divided into 10 parts, or it can be divided into 20 parts, so that the definition of hours is more than the current hour. These are all supposed provisions. The definition is for the sake of calculation, people can see day and night, so it will definitely define a day and night as a day, and not a day and a few hours as a day.

The formula for defining acceleration is a=v s

Because acceleration is literally the degree of increase in velocity, another formula.

a=f m is not a defining formula, but a situation in which the velocity of the object changes when a force acts on an object.

Definition refers to the peculiar properties of something that distinguish it from the essence of other things and highlight the main aspects of its main contradictions. For example, in the Xinhua Dictionary, "human" is defined as "a higher animal that can make tools and skillfully use them for labor." "Man can make tools and use tools to do labor, but other animals cannot, and the concept refers to the meaning, connotation, and reaction of a certain thing or a certain time, which is a reaction in the human brain.

Whereas, physical meaning refers to the motion or material properties of a certain thing or concept, which is specific to things.

Explanations of physics.

A basic sector of the natural sciences. The study of the basic structure of matter and the most general laws of the movement of matter. In Greek, it originally meant "nature."

In ancient Europe, it was a general term for natural science. After chemistry, astronomy, geoscience, biology, etc., were separated from the natural sciences, the laws and research methods of physics were the basis of other natural sciences and technical sciences. According to the different forms of material movement studied, it can be divided into many departments and sub-disciplines.

Words decompose the interpretation of things Thing ù Something other than a person Something concrete: a thing. Creature.

Object. Goods. Gift.

Cultural relic. Prices. Substance.

The land is vast. The pendulum will swing. Content, substance:

There is a saying . Refers to people other than oneself or the environment opposite oneself: material discussion (criticism by the masses).

Treat people and things. The Explanation of Rationalism was an idealist philosophical thought that advocated rationality in the Song and Ming dynasties. It includes objective idealism represented by Zhou Dunyi, Cheng Hao, Cheng Yi, and Zhu Xi, and subjective idealism represented by Lu Jiuyuan and Wang Shouren.

The former argues; Reason; is eternal, preceding the spiritual entity of the world, and all things in the world can only be made of;