1) Does anyone have a general idea of how to experimentally validate or falsify the Third Law of Thermodynamics in its strong form? In another thread, I suggested a procedure for validating the third law of thermodynamics in its weak form. Basically, one determines the specific heat in the limit as the temperature goes to absolute zero. However, this could not validate the strong form of the third law. Just as a review, the Third Law of Thermodynamics in it weak form is: 0 = lim[T→0] ∂S(T, ...)/∂T. Basically, this says that the specific heat of the system approaches 0 in the limit of the temperature approaching absolute zero. where T is absolute temperature of a system, and S is the entropy of the system. The Third Law of Thermodynamics in its strong form is: 0= lim[T→0] S(T, ...) and, 0 = lim[T→0] ∂S(T, ...)/∂T. The second equation is just the weak form of the third law. However, the first equation makes the third law even more specific. 2) Has anyone done any experiments validating the Third Law of Thermodynamics in either its weak or strong form? -Perhaps someone has a citation and reference! 3) Does the Third Law in either form put a limit on thermal conductivity?