The discussion revolves around identifying the branches of physics and mathematics necessary to solve a specific problem, with a focus on thermodynamics, statistical physics, and potentially quantum mechanics. Participants explore the relevance of different physics concepts and their applicability based on the problem's context.
Participants express differing views on the relationship between the second law of thermodynamics and entropy, with some asserting compatibility while others question it. The discussion remains unresolved regarding the specific branches of physics required for the problem.
There are unresolved assumptions regarding the nature of the problem being discussed, as well as the definitions of the branches of physics mentioned. The level of understanding required for different concepts is also not fully clarified.
The problem is that the second law of thermodynamics is the only law in physics that don't fit well with entropy . Search it , the problem is one and famous .DrClaude said:It depends on the problem. Most probably thermodynamics or statistical physics (I would classify classical thermodynamics as a subset of stat. phys.). Maybe quantum mechanics, depending on the system.
The level of the question is also important. Basic thermo or stat. phys. deal mostly with equilibrium. In some cases, non-equilibrium thermo or stat. phys. is necessary.
That's not my question . I am asking about the problem that the 2nd law is the only law that doesn't fit with entropy . Your answear was about how to calculate the entropy of a systemKrylov said:Everything you need is in the recollections of an elderly gentleman. Coincidentally he wrote them down just today.