Formulation Of Third Law: Definition Of Third Law Of Thermodynamics
The third law of thermodynamics has a controversial past and a number of formulations due to PLANCK , EINSTEIN and NERNST . Between the time period of 1906 to 1912, many formulations of the third law of thermodynamics have been presented by various scientists, but among them all, NERNST'S PRINCIPLE of un-attainability was the most accepted principle for the third law of thermodynamics. Thus, it is correct to say that this law was developed by the German chemist Walther Nernst between 1906 and 1912. Let us now look at the various formulations of the third law of thermodynamics proposed by Planck and Nernst. NERNST HEAT THEOREM Walther Nernst was the first to recognize the principle that underlies the third law. The third law of thermodynamics, sometimes called Nernst's theorem or Nernst's Postulate, relates to the entropy and temperature of a physical system. Walther Nernst’s first formulation of the third law of thermodynamics, called the heat theorem, was th...