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Thermodynamics

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Before getting to know in depth the meaning of the word that now occupies us, thermodynamics, it is important to highlight that the etymological origin of it is in Latin. More specifically, we can underline the fact that it is made up of the union of three clearly differentiated parts: the word thermos which comes to be defined as "hot", the noun let's dynamism which is equivalent to "force" or "power", and the suffix -ico which can be determined which means "relative to".

It is identified with the name of thermodynamics to the branch of the physical which focuses on the study of the links between the hot and the other varieties of Energy . It analyzes, therefore, the effects that the modifications of temperature, pressure, density, mass and volume in each system have on a macroscopic level.

It is important to underline that there is a series of basic concepts that it is essential to know beforehand to understand what the thermodynamics process is like. In this sense one of them is what is called the state of equilibrium that can be defined as that dynamic process that takes place in a system when both what is the volume and the temperature and pressure do not change.

In the same way is what is known by the internal energy name of the system. This is understood as the sum of what are the energies of each and every one of the particles that make up that one. In this case, it is important to underline that these energies only depend on what the temperature is.

The third concept that is fundamental that we know before knowing how the thermodynamics process is is the state equation. A terminology with which the relationship between pressure, temperature and volume is expressed.

The basis of thermodynamics is everything that is related to the passage of energy, a phenomenon capable of causing movement in various bodies . The First Law of Thermodynamics , which is known as the principle of conservation of energy, points out that if a system makes a heat exchange with another, its own internal energy will be transformed. Heat, in this sense, constitutes the energy that a system has to permute if it needs to compensate for the contrasts that arise when comparing the effort and the internal energy.

The Second law of thermodynamics it involves different restrictions for energy transfers that, in hypothesis, could be carried out if the first law is taken into account. The second principle serves as a regulator of the direction in which thermodynamic processes are carried out and imposes the impossibility of their development in the opposite direction. It should be noted that this second law is supported by the entropy , a physical quantity in charge of measuring the amount of useless energy to generate work.

The third law contemplated by thermodynamics Finally, it highlights that it is not possible to achieve a thermal mark that reaches absolute zero through a finite amount of physical procedures.

Among the thermodynamic processes, the isothermal (does not change the temperature), the isochromes (does not change the volume), the isobaric (does not change the pressure) and adiabatic (there is no heat transfer).

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