Second law of thermodynamics
= Second law of thermodynamics
{wiki=Second_law_of_thermodynamics}
The Second Law of Thermodynamics is a fundamental principle that governs the behavior of energy and entropy in physical systems. It can be stated in several ways, but one of the most common formulations is that in any energy transfer or transformation, the total entropy of an isolated system can never decrease over time. Instead, it will either increase or remain constant in reversible processes.