Laws of Thermodynamics
1. Zeroth Law of Thermodynamics
If two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium with each other. This establishes the concept of temperature.
2. First Law of Thermodynamics
Known as the Law of Energy Conservation, it states that energy cannot be created or destroyed in an isolated system. The total energy of the system is the sum of its internal energy, the heat added to the system, and the work done on the system.
3. Second Law of Thermodynamics
This law states that the total entropy of an isolated system can never decrease over time. It also indicates that natural processes tend to move towards a state of maximum disorder or entropy.
4. Third Law of Thermodynamics
As temperatures approach absolute zero, the entropy of a perfect crystal approaches zero. This law implies that it is impossible to reach absolute zero through any physical process.
Conclusion
Understanding these laws is crucial for various scientific fields including physics, chemistry, and engineering. They lay the foundation for analyzing thermal systems and processes.