Basic concepts in quantum physics

Fundamental concepts in quantum physics: Bell's inequality - which was the basis of the Nobel Prize

Inspired by the winners of the 2022 Nobel Prize in Physics, we will discuss Bell's theorem without introducing formulas and inequalities. In this article we will illustrate how experiments with entangled particles contradict the assumption that there are hidden variables and that quantum mechanics indeed
Quantum. Illustration: depositphotos.com

Basic concepts in quantum physics: where is the quantum?

Where is the quantum in quantum mechanics? It turns out that nature is not discrete at all, as long as there is nothing to force it to be so
Schrödinger's cat. Illustration: shutterstock

Basic concepts in quantum physics: what is the Schrödinger equation?

The most famous quantum equation was published in 1926 on just two pages. What does she describe and how did Schrödinger think of her?
Stern Gerlach experimental system. The particle beam exits 1, passes through a changing magnetic field (3) and hits the screen (5). In 4, the result of the experiment is demonstrated according to the classical predictions. Image from Wikipedia.

Basic concepts in quantum physics: what is spin?

What is spin? And where did the idea come from? This is a story about small steps, witty guesses and a fight against giants