William Thomson, 1st Baron Kelvin William Thomson, 1st Baron Kelvin William Thomson, 1st Baron Kelvin, (26 June 1824 – 17 December 1907) was a Scots-Irish mathematical physicist and engineer who was born in Belfast in 1824. At the University of Glasgow he did important work in the mathematical analysis of electricity and formulation of the first and second laws of thermodynamics, and did much to unify the emerging discipline of physics in its modern form. He worked closely with mathematics professor Hugh Blackburn in his work. He also had a career as an electric telegraph engineer and inventor, which propelled him into the public eye
Laws of thermodynamics third law of thermodynamics is sometimes stated as follows: At zero temperature the system must be in a state with the minimum thermal energy. This statement holds true if the perfect crystal has only one state with minimum energy. Entropy is related to the number of possible microstates according to: Where "S" is the entropy of the system, "k" Boltzmann's constant, and "Ω" the number of microstates (e.g. possible configurations of atoms). At absolute zero there is only 1 microstate possible ("Ω"=1 as all the atoms are identical for a pure substance and as a result all orders are identical