A quick intro to the Second Law of Thermodynamics

Have you ever seen a tepid cup of coffee getting hot? Or a pile of sand grains organizing themselves into a sand castle? It would be strange, right? But why? The reason is behind one of the most fundamental and general laws of physics: The Second Law of Thermodynamics.

Prepared by Mariona Esquerda Ciutat from the Hyman and Jülicher labs in Dresden.