Scaling laws for fluid systems using generalized homogeneous functions of strong and weak variables

We present a systematic approach to scaling at ordinary critical points with special emphasis on the critical point of a single-component fluid. Recent work on scaling in fluids has avoided the possibility of a singular coexistence surface. In particular, the consequences of satisfying the inequality $\ensuremath{\theta}\ensuremath{\le}\ensuremath{\alpha}+\ensuremath{\beta}$ as an equality have no…