The Stern Gerlach Experiment Reveals The Quantum Nature of Matter

With the Stern-Gerlach experiment I started a series of posts where I want to describe in simple terms the quantum nature of reality that surrounds us. The experiment of Stern Gerlach experiment is particularly important because it is not directly understandable in terms of classical mechanics.

In quantum mechanics, the Stern–Gerlach experiment, named after Otto Stern and Walther Gerlach, is an important 1922 experiment on the deflection of particles, often used to illustrate basic principles of quantum mechanics. It can be used to demonstrate that electrons and atoms have intrinsically quantum properties, and how measurement in quantum mechanics affects the system being measured.

Here I present a very explanatory video that allows us to understand what are the differences between the quantum and the macroscopic world described by classical mechanics.