Love and thermodynamics

According to the First Principle of Thermodynamics, the internal energy increase of a system is the difference between the heat exchanged with the outside and the mechanical work performed. The work takes the form of an oscillatory movement, and the variation of internal energy is manifested in the increase in body temperature and in sweating. Both summed magnitudes result in the heat exchanged with the environment.

On the other hand, the Second Principle of thermodynamics mentions that the entropy of a system always tends to increase. Entropy is a measure of the disorder of a system, of the agitation of the particles if you like. It is easy to see in real life that disorder always increases. For example, a glass can break and spill the water it contains, but we will never see the pieces of glass and put the water back inside, as in an upside down video.

In the matter of the love arts that concerns us, the increase in entropy or disorder is also easy to observe. One goes more and more disheveled, and the bed is totally undone, and that if it does not end up breaking in case the movements are very impetuous.

That's why, in the case of a couple of industrial engineers from the Polytechnic of Madrid, when it comes to getting down to the task with the passion that this requires -and that is not a characteristic of the aforementioned school-, it can be good that they pose it as a thermodynamic process. "Honey, we're going to perform a high-performance heat exchange, raising the entropy of the universe to values ​​never seen!" Something like that.