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nature : there are different means of expression. Chemical workers to Planck (M. Planck ,1858-1947, Germany) expressed the most applicable. It can be expressed as "zero thermodynamic temperature (T = 0 open), all perfect crystal entropy value is equal to zero." The so-called "perfect lens" is not any defects in the crystal rules. Accordingly, the use of calorimetric data can be calculated in various substances arbitrary state (physical state, temperature and pressure) of entropy. This set of pure substances entropy called calorimetry third law of entropy or entropy. This law also expressed as "impossible to utilize the limited operation to make an object cooled to the freezing temperature thermodynamics." Such statements can be referred to as "impossible to achieve absolute zero principle."
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