{"id":808,"date":"2019-06-17T19:25:01","date_gmt":"2019-06-17T19:25:01","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/louisville-wm-physics\/?post_type=chapter&#038;p=808"},"modified":"2019-10-31T16:23:53","modified_gmt":"2019-10-31T16:23:53","slug":"why-it-matters-entropy-and-the-second-law-of-thermodynamics","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/louisville-wm-physics\/chapter\/why-it-matters-entropy-and-the-second-law-of-thermodynamics\/","title":{"raw":"Why It Matters:  Entropy and the Second Law of Thermodynamics","rendered":"Why It Matters:  Entropy and the Second Law of Thermodynamics"},"content":{"raw":"The First Law of Thermodynamics tells us how energy is conserved in a thermodynamic system.\u00a0 If we consider an isolated system, where the system is separated from its surrounding environment by a boundary that doesn\u2019t allow energy to pass through it, the first law states that the total energy of the system doesn\u2019t change.\u00a0 The Second Law of Thermodynamics, on the other hand, introduces the new concept of entropy and describes how the energy within a system will arrange itself spontaneously.\u00a0 If our system is isolated and allowed to evolve spontaneously, it will evolve so that the entropy of the system increases.\u00a0 Stated simply, the entropy of an isolated system will either increase or remain the same depending on whether a process is reversible or irreversible.\u00a0 For all real world processes, the entropy of a system increases.","rendered":"<p>The First Law of Thermodynamics tells us how energy is conserved in a thermodynamic system.\u00a0 If we consider an isolated system, where the system is separated from its surrounding environment by a boundary that doesn\u2019t allow energy to pass through it, the first law states that the total energy of the system doesn\u2019t change.\u00a0 The Second Law of Thermodynamics, on the other hand, introduces the new concept of entropy and describes how the energy within a system will arrange itself spontaneously.\u00a0 If our system is isolated and allowed to evolve spontaneously, it will evolve so that the entropy of the system increases.\u00a0 Stated simply, the entropy of an isolated system will either increase or remain the same depending on whether a process is reversible or irreversible.\u00a0 For all real world processes, the entropy of a system increases.<\/p>\n\n\t\t\t <section class=\"citations-section\" role=\"contentinfo\">\n\t\t\t <h3>Candela Citations<\/h3>\n\t\t\t\t\t <div>\n\t\t\t\t\t\t <div id=\"citation-list-808\">\n\t\t\t\t\t\t\t <div class=\"licensing\"><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Original<\/div><ul class=\"citation-list\"><li>Why It Matters:  Entropy and the Second Law of Thermodynamics. <strong>Authored by<\/strong>: Raymond Chastain. <strong>Provided by<\/strong>: University of Louisville, Lumen Learning. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><\/ul><\/div>\n\t\t\t\t\t\t <\/div>\n\t\t\t\t\t <\/div>\n\t\t\t <\/section>","protected":false},"author":25803,"menu_order":1,"template":"","meta":{"_candela_citation":"[{\"type\":\"original\",\"description\":\"Why It Matters:  Entropy and the Second Law of Thermodynamics\",\"author\":\"Raymond Chastain\",\"organization\":\"University of Louisville, Lumen 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