9/6/2023 0 Comments Entropy equationFurthermore, it includes the entropy of the system and the entropy of the surroundings.īesides, there are many equations to calculate entropy:ġ. Also, scientists have concluded that in a spontaneous process the entropy of process must increase. First is the presence of the symbol log s. (For a review of logs, see logarithm.) There are several things worth noting about this equation. Moreover, the entropy of solid (particle are closely packed) is more in comparison to the gas (particles are free to move). This is the quantity that he called entropy, and it is represented by H in the following formula: H p 1 log s (1/p 1) + p 2 log s (1/p 2) + + p k log s (1/p k). Entropy FormulaĮntropy is a thermodynamic function that we use to measure uncertainty or disorder of a system. In addition, some microscope process is reversible. Besides, some other example of changeable phase is the melting of metals. On the other hand, blowing a building, frying an egg is an unalterable change. Moreover, when the process is unalterable then the entropy will increase.įor example, watching a movie is a changeable process because you can watch the movie from backward. Also, even when the cyclic process is changeable then the entropy will not change. The second law of thermodynamics says that every process involves a cycle and the entropy of the system will either stay the same or increase. Get the huge list of Physics Formulas here The Second Law of Thermodynamics Furthermore, the more you increase the ball the more ways it can be arranged. So, now you can arrange the balls in two ways. After some time you put another ball on the table. Moreover, the question here is in how many ways you can arrange this ball? The answer is one. In another example, you grab a ball and put it on a table. So, what will happen next? We all know that the smell will spread in the entire room and the perfume molecule will eventually fill the room. Suppose you sprayed perfume in one corner of the room. Furthermore, we can understand it more easily with the help of an example. Moreover, the higher the entropy the more disordered the system will become. This paper provides valuable insights into the application of general entropies to the apparent horizon of the universe.Entropy refers to the number of ways in which a system can be arranged. Finally, we compute cosmography parameters to analyze the kinematics of the universe, with particular attention given to the notable influence of the correction function f (ρ) on these parameters. To calculate entropy changes for a chemical reaction We have seen that the energy given off (or absorbed) by a reaction, and monitored by noting the change in temperature of the surroundings, can be used to determine the enthalpy of a reaction (e.g. Additionally, we investigate the first and second laws of thermodynamics within this framework and illustrate how the limitations imposed on the equation of state of the cosmic fluid can be resolved through the incorporation of this correction function. The construction of the function f (ρ) is facilitated through considerations of the thermodynamics associated with the apparent horizon. Our calculations demonstrate that, by employing a correction function f (ρ) to modify the energy-momentum density tensor, the entropic area law (Bekenstein-Hawking entropy) can still be regarded as a general entropy. The temperature in this equation must be. Building upon the work of Nojiri and colleagues in 2022, who introduced a class of generalized entropies with four parameters capable of converging to familiar entropies and addressing specific cosmological issues, our research explores the impact of correcting the entropy on the energy-momentum tensor of the cosmic fluid from the outset. Using this equation it is possible to measure entropy changes using a calorimeter. The investigation of modifications to the FLRW cosmology resulting from the consideration of a general entropy for the cosmological apparent horizon is the subject of this study.
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