Otto Stern quotes

Otto Stern was a German-American physicist best known for his pioneering work in molecular beam experiments. His research provided fundamental evidence for quantum mechanics, notably through the Stern-Gerlach experiment. He received the Nobel Prize in Physics and made significant contributions to our understanding of atomic and molecular structure. Here are 2 of his quotes:

A simple calculation shows that from the classical theory follows that we should find a broadening of the beam with the maximum intensity on the place of the beam without field. However, from the quantum theory follows that we should find there no intensity at all, and deflected molecules on both sides. The beam should split up in two beams corresponding to the two orientations of the magnet. The experiment decided in favor of the quantum theory.

Otto Stern