Entropy is an extremely important physical quantity? But it is also famous for being difficult to understand. Clausius was first introduced in 1865? Used to quantitatively clarify the second law of thermodynamics. What happened afterwards? Boltzmann gives entropy a statistical explanation. To 1929? Szilard connected entropy with information again? A new meaning of entropy is given. At present? Entropy not only appears widely in natural science and engineering technology? Even in the social sciences? The humanities and economic fields often encounter the traces of entropy. Because the concept of entropy is abstract and obscure? Widely used by people? And it is widely abused by people. Is entropy still a concept that science has not yet understood? What is entropy and its essence? What determines that entropy and other microscopic mechanisms have not been understood? Only give a macro statistical explanation? It is considered that the probabilistic legal system is the essence of limiting entropy. In fact, both thermodynamics and statistical physics are completed under the macro framework? It doesn't go deep into the twilight world? It is the performance of macro statistics. Modern science can't give an answer to the nature of entropy? Because entropy is defined and measured by thermal and thermodynamic temperatures? And the definition of heat is a vague and contradictory concept? Temperature is defined by heat? So the concept of entropy is unclear and confusing? Even confused? For example, the hot silence of the universe has plagued the scientific community so far? Can't give a substantive answer? Life depends on negative entropy? What is this negative entropy? Nobody knows. Thermodynamics and statistical physics don't understand heat? In order to solve the contradiction with dynamics? Extend your research to irreversible processes? Not only did it not go deep into the essence of the problem? It complicates the theory? Dissipative structure is its representative. Physicists generally believe that? The phenomena and laws of thermodynamics can be traced back to the unification of the laws of dynamics. However, how to get macro irreversibility from time reversal symmetry's micro-dynamics? Whether thermodynamics is comprehensive and effective in the macro field is still a scientific problem to be clarified and solved.
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