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# Entropy

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Entropy, the original document written in Spanish language, which shows the entropy as a universal mechanism of order and control of the universe.

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### Entropy

1. 1. Entropía Entropy Ентропията Entropia Entropie 熵 Entropija Entropi Entropy ‫היפורטנא‬ Entropía Entrop ie エントロピー Entropi Autor Entropía Arturo Raúl Cortés
2. 2. This document is an electronic translation of the original written in Spanish language, we apologize if this translation differs from the original document. Index Entropy, which the dictionary says it. Definition of some concepts of entropy. Preface. Entropy First concept, entropy chaotic. Entropy mechanism. Circumstantial facts, entropy, synergy. The laws of thermodynamics. The entropy as chaos magnitude. The creation of entropy, and impossible to destroy it. Genuine entropy. Let us order the concept of entropy. Laying new foundations. Lay new foundations rediscovers entropy. And our universe. Epilogue.
3. 3. Entropy, which the dictionary says it. entropy. (Del gr. Ἐντροπία, round, used in various figurative senses). 1. f. Fís. Thermodynamic scale, which measures the unused part of the energy contained in a system. 2. f. Fís. Measure of disorder of a system. A substance with a mass of molecules regularly arranged, forming a crystal, entropy is much lower than the same substance in the form of gas molecules with their free and full disorder. 3. f. Inform. Measure of uncertainty before a set of messages, which are going to receive one. Definition of some concepts of entropy. Definition of some concepts Thermodynamics, by defining a very simple, look at the inside of the physical systems, trade in energy as heat is conducted from one system to another. A macroscopic quantities that are related to the internal state of a system are called thermodynamic coordinates, they will help us determine the internal energy of the system. In summary, the ultimate goal of thermodynamics is found between the thermodynamic coordinates overall consistent with the basic principles of physics (remember the principle of conservation of energy that we try the number 3 of "Social Horizonte). The thermodynamic analysis based on certain laws: the Law "zero" on the concept of temperature, the first law of thermodynamics, which tells of the principle of conservation of energy, the second law of thermodynamics, we define the entropy. Then we will discuss each of these laws, with emphasis on the second law and concept of entropy. Act Zero The Law of zero thermodynamics tells us that if we have two sections called A and B, with a temperature different from another, and put into contact in a given time t, they will reach the same temperature, ie both have the same temperature. If after a third body, which we call C contacts A and B, also reached the same temperature and, therefore, A, B and C have the same temperature while in contact.
4. 4. This principle can induce temperature, which is a condition that each body has, and that man has learned to measure through arbitrary reference scales (scales thermometer). The First Law The first law of thermodynamics the concept of internal energy, work and heat. He says that if a system with a fixed internal energy, work is done through a process, the internal energy of the system vary. A difference in the internal energy of the system and the amount of work we call heat. The heat energy is transferred to the system by non-mechanical means. Think that our system is a metal container with water, we can raise the temperature of the water by friction with a spoon or by direct heating in a burner in the first case, we are doing work on the system and will pass in the second heat. It is worth noting that the internal energy of a system, work and heat are but different manifestations of energy. That's why energy is not created or destroyed, but only during a process is transformed into its various manifestations. The Second Law Finally, we will see the contents of the second law of thermodynamics. In simple terms more or less would read: "There is a process whose only result is the absorption of heat from one source and the full conversion of this heat into work." This principle (principle of Kelvin-Planck) was born in the study of the performance of machines and technological improvement of them. If this principle were true, it could operate taking a thermal heat from the environment, apparently there is no contradiction, because the environment contains a certain amount of internal energy, but we must note two things: first, the second law of thermodynamics is not a consequence of the first, but a separate law, and second, the second law tells us about the restrictions that exist to use energy in various processes, in our case, a thermal power. There is a machine that uses internal energy of a single heat source. The concept of entropy was first introduced by R. J. Clausius in the mid-nineteenth century. Clausius, French engineer, also made a beginning to the Second Law: "No process is possible whose only result is some heat transfer from a cold to a body warmer." Based on this principle, Clausius introduced the concept of entropy, which is a measurement of the amount of restrictions that exist for a process to take place and we also determined the direction of the process. Let's talk about the three most important meanings of the word entropy.
5. 5. Entropy, disorder and degree of organization. Let's imagine we have a box with three divisions, inside the box and in each division are three different types of marbles: blue, yellow and red, respectively. The divisions are moving so I decided to remove the first one, which separates the blue yellow marbles. What am I doing in terms of entropy is to remove an index or degree of restriction on my system before I remove the first division, the marbles were separated and ordered in colors: the first division in the blue the second yellow and red in the third, were restricted to a certain order. By removing the second division, I am also taking another degree of restriction. The marbles have been mixed together so that now I can not take that sort because the barriers have been removed are restricted. The entropy of this system has increased to remove the restrictions as originally had an order and at the end of the process (the process is in this case remove the divisions of the box) there is some order in the box. Entropy in this case is a measure of order (or disorder) of a system or a lack of degrees of restriction, how to use it is measured in our original system, ie, before removing any restriction, and re-measure at the end of the process that the system suffered. It is important to note that entropy is not defined as an absolute quantity S (the symbol of entropy), but what can be measured is the difference between the entropy of a system if the initial and final entropy of the Sf. It makes no sense to speak of but in terms of entropy change in the conditions of a system. Entropia, reversible processes and irreversible processes. Returning to the example of the box with marbles and separations, we will explain what is a reversible process and that process is not reversible. Called reversible process that can be invested and let our system under the same conditions. Taking into account our cash and without separations, we have the balls to rebellions with each other, ie, without a warrant. If the process performed to remove the divisions were reversible, the marbles would spontaneously ordered in blue, yellow and red, in the order of the divisions. This will not happen. The process that we undertook with our box of marbles was not a reversible process, where once the order was in the initial conditions of the system and never settle. The study of such processes is important in nature because all processes are irreversible. Entropy and energy "spent". On the principle enunciated by Clausius previously mentioned, we can find the relationship with entropy and the energy released in a process. Think of an engine. The
6. 6. engine needs an energy source in order to make it work. If we think of a car, gasoline, along with the spark of the engine provides the energy (chemistry) combustion can make the car move. What does the entropy here? The energy that the car "used" to perform work and move, are "spent", ie energy is released through a chemical process that is no longer usable to produce an engine work. This is one of the most difficult to understand concepts of entropy, as it requires a slightly less trivial knowledge of the operation of engines, refrigerators and the Carnot cycle. But for our purposes with this explanation is sufficient. What is entropy? Entropy as a measure of the degree of restriction as a measure of disorder of a system or engineering, as a subsidiary on the problems of energy efficiency of machines, is one of the most important thermodynamic variables. Their relationship to chaos theory opens a new field of study and research in this very "hands" concept.