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t. e. Entropy is a scientific concept that is most commonly associated with a state of disorder, randomness, or uncertainty. The term and the concept are used in diverse fields, from classical thermodynamics, where it was first recognized, to the microscopic description of nature in statistical physics, and to the principles of information theory.
La entropía es una función de estado de carácter extensivo y su valor, en un sistema aislado, crece en el transcurso de un proceso que se da de forma natural. La entropía describe lo irreversible de los sistemas termodinámicos. La palabra «entropía» procede del griego (ἐντροπία) y significa evolución o transformación.
This web page is supposed to explain the second law of thermodynamics and entropy, but it shows an error message instead. It is part of OpenStax, a nonprofit that provides free textbooks and learning materials.
Similarly, the hot substance, the lava, loses heat (q < 0), so its entropy change can be written as ΔS hot = −q/T hot, where T cold and T hot are the temperatures of the cold and hot substances, respectively. The total entropy change of the universe accompanying this process is therefore.
Clarificar la definición de entropía termodinámica. Google Classroom. Microsoft Teams. Acerca de. Transcripción. Aclarar que la definición termodinámica de la entropía requiere de un sistema reversible. Creado por Sal Khan. Preguntas. Sugerencias y agradecimientos.
Entropy is the loss of energy available to do work. Another form of the second law of thermodynamics states that the total entropy of a system either increases or remains constant; it never decreases. Entropy is zero in a reversible process; it increases in an irreversible process.
where \(S\) is the total entropy of the closed system or the entire universe, and the equal sign is for a reversible process. The fact is the entropy statement of the second law of thermodynamics:
