Critical point

A critical point is a specific condition in a system where its behavior changes fundamentally. In physics and mathematics, it's often where a substance undergoes a phase transition—like from liquid to gas—at the critical temperature and pressure. At this point, the properties of the substance become indistinguishable between phases. In a broader sense, a critical point can also refer to a moment where a system becomes highly sensitive to small changes, leading to significant effects. Understanding critical points helps scientists predict and control behaviors in materials, fluids, and other complex systems.