In this book I have gathered some topics that can arouse the interest of the most curious. Their treatment is simple, for everyone to understand, even if sometimes mathematical relationships could intimidate some people. The solution for the latter is simple: get over them!
The subjects are chosen from various fields, but all incorporated within the scientific area. In everything that is analyzed, there is no discount from the word of science and the red line followed is that of rigor, the reason for which you will also encounter mathematical expressions and diagrams.