We discuss the problem of defining (nonequilibrium) entropy in terms of the concepts of mechanics and of reconciling its monotonic increase with the Hamiltonian evolution of the dynamical system. This ...

The Laws of Thermodynamics are the foundation of heat transfer and energy work. When any engineer is designing or implementing a system, the consideration of heat loss or energy produced is influenced ...

To many physicists, “Tsallis entropy” has been a revolution in statistical mechanics. To others, it is merely a useful fitting technique. Jon Cartwright tries to make sense of this world of disorder. ...