The second law of thermodynamics states that the total [[Entropy|entropy]] of a system can not decrease. This statement applies to systems which are independent from other systems. There are two important historical statements which helped to establish the second law of thermodynamics. # Kelvin-Planck Statement ![[Kelvin-Planck Statement]] # Clausius Statement ![[Clausius Statement]] # Inequality of Clausius ![[Inequality of Clausius]] # Entropy ![[Entropy]]