Laws of thermodynamics

Laws of Thermodynamics

The Laws of Thermodynamics (pronunciation: /θɜːrməʊdaɪˈnamɪks/) are fundamental principles that describe the physical properties of thermodynamic systems. The term "thermodynamics" comes from the Greek words "therme" (heat) and "dynamis" (power).

Zeroth Law of Thermodynamics

The Zeroth Law of Thermodynamics states that if two thermodynamic systems are each in thermal equilibrium with a third, then they are in thermal equilibrium with each other. This law forms the basis of temperature measurement.

First Law of Thermodynamics

The First Law of Thermodynamics, also known as the Law of Energy Conservation, states that energy cannot be created or destroyed in an isolated system. The total amount of energy and matter in the Universe remains constant, merely changing from one form to another.

Second Law of Thermodynamics

The Second Law of Thermodynamics states that the state of entropy of the entire universe, as an isolated system, will always increase over time. The changes in the entropy in the universe can never be negative.

Third Law of Thermodynamics

The Third Law of Thermodynamics states that the entropy of a system approaches a constant value as the temperature approaches absolute zero. This law provides an absolute reference point for the determination of entropy.

Laws of thermodynamics

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