It is an abstract state parameter that describes the disorder degree of the system. (The spontaneous process of nature goes in a disorderly direction, that is, the entropy increases. The person who created this quantity is very boring, maybe he wants to show off his mathematical knowledge. Ignore him. )

Official statement: 1. Entropy in chemistry and thermodynamics is a measure of the total amount of energy that cannot do work in dynamics. Entropy is also used to calculate the disorder and complexity of the system.

2. Entropy is an indicator of biodiversity in ecology. Entropy is the concept of life science and the second law of thermodynamics to explain life phenomena.

3. In information technology, it refers to the degree of uncertainty of a thing. In information technology, the formula is I = LG (P), and P is the probability of one thing.

The concept of entropy was first put forward by Clausius in 1864 and applied to thermodynamics. Information theory was first introduced by Claude elwood Shannon in 1948.