THERMODYNAMICS - the laws (Zeroth, Minus Oneth, First, Second and Third !)

This contains the basic fundamental concepts of the laws of thermodynamics and requires in depth explanation on the part of the instructor to discuss the finer details per slide.

1. THERMODYNAMICS THE LAWS OF

2. What is THERMODYNAMICS ?

3. THERMODYNAMICS (THEN and NOW) Initially, it began as a study of how heat(with specific reference to temperature) moves around the physical world and what it does to things … Later, it became clear that heat itself is just one facet of energy and thus there was a need to include all forms of energy into the general definitions, laws and how energy makes the Universe tick …

4. ENERGY What is it ? What does it do ?

5. How many LAWS OF THERMODYNAMICS are there ? We are familiar with three …

6. How many LAWS OF THERMODYNAMICS are there ? But there are actually FIVE of them …

7. Law -1 or Minus Oneth Law Heat flows from HOT to COLD

8. Law 0 or Zeroeth Law If System A is in Thermal Equilibrium with System B a nd System B is in Thermal Equilibrium with System C, then it follows that System A is in Thermal Equilibrium with System C

9. Law 1 or First Law Law of Conservation of Energy Energy cannot be created or destroyed in an isolated system.

10. Law 2 or Second Law The entropy of any isolated system always increases

11. Law 3 or Third Law the entropy of a system approaches a constant value as the temperature approaches absolute zero The entropy of a pure crystal at absolute zero is zero