Physics is perhaps the most adaptable of all scientific disciplines, always ready to take on challenges that are not at its core. The history of how Physics has evolved in its scope shows that it does not follow a straight line when tackling natural phenomena and real-world problems. Even when the study of planetary motions was the “mainstream” Physics of the time, some researchers, by the end of the 19th century, were already interested in the reasons why a dead frog would keep on moving the legs when they were touched by two metal rods. The Italian physicist Alessandro Volta, with almost no knowledge of the microscopic mechanisms of the chemistry of batteries, was nevertheless able to create one of them. At that time, it was not clear that the principles of electromagnetism would pervade our life and that the subject would end up today as one of the basic courses for every student in Physics.
Physics, as a discipline, has been changing, incorporating new subject matters in an unconventional way. Being a physicist means a way of observing the reality, looking at new problems and challenges also beyond the natural world and making (mathematically expressed) models and predictions of a plethora of phenomena, whenever them can be quantitatively described. Physics’ plasticity is particularly important in the present times, where many disruptive changes are taking place: our society is transitioning to a fully digital world, and despite our detailed knowledge of many aspects regarding how nature works, we can say almost nothing, comparatively, when it comes to describing how we, humans, behave.