Quantum Theory / Particle Physics
October 8, 2018
Otto Stern and Walter Gerlach demonstrated in 1922 experimentally the “existence of space quantization in a magnetic field”, using their own words. The result of this experiment is later on used to introduce the so-called intrinsic spin angular momentum of elementary and other particles. This article describes what went wrong in the applied argumentation. In 1896 Zeeman and Lorentz showed experimentally and theoretically that atoms emit ‘shifted’ frequencies when exposed to an external magnetic field. This phenomenon has been used to demonstrate the existence of spinning electrons. However, it is shown that this demonstration is not convincing at all.