Física e realidade

Abstract

The purpose of this work is to make a brief comparison about the theoretical and experimental bases of classical mechanics and quantum mechanics, highlighting the main conceptual differences between them. We present the main concepts of quantum mechanics, such as the Schroedinger equation, the wave function, the probabilistic interpretation and the uncertainty principle. We present Schroedinger's cat thought experiment and discuss the role of the observer in the final outcome of the experiment. We then developed the theme of the role of the observer in defining reality, the origin of the universe and whether there would be a primordial observer to make the universe in which we live possible. We develop this theme always in the light of physics theories, citing experiments and theories, but without the fear of opening our minds to new ideas and concepts in the world of physics. Even if part of physics seems real to us and part of it feels like fiction; let's try to understand the role of the observer in defining reality, making a brief comparison and differentiation between classical and quantum views.