The concept of entropy is as fundamental to physics as energy or temperature. However, it is an abstract concept and is related to the amount of disorder of a System. ENTROPY S [ J.K-1 ] The entropy of a System is related to the amount of disorder in a system. The entropy is a state variable and the change in the value of the entropy is important and not the actual value of the entropy. Entropy in the Universe / Second Law of Thermodynamics The total entropy of the Universe stays the same whenever a reversible process occurs. The total entropy of the Universe increases whenever an irreversible process occurs.
The concept of entropy is as fundamental to physics as energy or temperature. However, it is an abstract concept and is related to the amount of disorder of a System. ENTROPY S [ J.K-1 ] The entropy of a System is related to the amount of disorder in a system. The entropy is a state variable and the change in the value of the entropy is important and not the actual value of the entropy. Entropy in the Universe / Second Law of Thermodynamics The total entropy of the Universe stays the same whenever a reversible process occurs. The total entropy of the Universe increases whenever an irreversible process occurs.