Albert Einstein is one of the most famous people of the last century. The echo of that turbulent era in which the scientist had to live and create, the echo of world wars and nuclear attacks, has died down, but his ingenious discoveries have not lost their sharpness today: the law of the relationship between mass and energy, expressed by the famous formula E u003d mc², truly pioneering quantum theory and especially the theory of relativity, which forever changed our previously so strong ideas about time and space.