Thermodynamics is the study of energy transformations.


  1. The first law of thermodynamics states that energy may be transformed from one form to another, however it cannot be created or destroyed.
  2. The second law of thermodynamics states that during any energy transformation, some of the energy is converted into an unusable form, mostly thermal energy that cannot be passed on. 
  3. Each transfer of energy results in a loss of energy from the system. 
  4. Therefore, in each step of a chain of transformations energy becomes less available.