8 Questions 230 Answers 0 Followers
Questions related from Tang Suye
For the first law, compare with dynamics, which corresponds to the energy conservation law, but the theoretical structure of the basic laws of the two are different. In dynamics, the energy of a...
08 August 2015 333 6 View
For the first law dU=TdS-pdV+Ydx+ΣμdN. Where we distinguished the (thermal) pressure p from the interactions, p denotes the (thermal) pressure, which is generated from thermal motion, Y denotes...
01 January 2015 4,496 87 View
Thermodynamic processes are the collective behaviour, or the sum of the basic dynamical processes, so the basic laws and both the theoretical structures of the two theories should be...
06 June 2014 8,512 15 View
The dynamical fundamental equations (Newton, Lagrangian and Hamiltonian mechanics, Maxwell's equations, Schrodinger equation) are the energy conservation equations, and correspond to the first law...
11 November 2013 7,665 6 View
Q1: The pressure p has different sign from other generalized force Y, why? In the equation of the first law of thermodynamics that dU=δQ-pdV+Ydx “the pressure, p, has different sign from other...
10 October 2013 2,221 58 View
The second law is the law of the total entropy production, the total entropy production diS always increases monotonically, i.e. diS≥0, but the partial differential of diS could be less than zero,...
08 August 2013 2,527 2 View
This is an obvious conflict but was ignored for a long time. By Clausius’ inequality we have \oint {dQ/T}≤0, and by the theory of exact differential we have \oint (dS)=0. Hence the conclusion...
07 July 2013 1,196 26 View
Given an isolated system, which with temperature T and pressure p, the internal energy of the system contains the heat energy, the latter is the internal heat energy. However, we can use the...
06 June 2013 4,342 34 View
