Third Law of Thermodynamics is concerned with the limiting behaviour, approaches a constant value of systems as the temperature approaches absolute zero. The Entropy of a perfect crystal is zero when the temperature of the crystal is equal to absolute zero (0 °K), with the exception of non-crystalline solids (glasses) the entropy of a system at absolute zero is typically close to zero, and is equal to the logarithm of the product of the quantum ground states. (Refer to the Laws of Thermodynamics)
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