Realistic Stern-Gerlach experiment
![Image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwqOqgAfHX1kP49v50yBiVsZKmHC45dAUhDdeYdKqeJ8uFIme-PDhYZdz0o2h-yyCuXXn5z-QlF5N_M_umJWQ-jkwjH_SuZSDfazg6F_2TMVI7Mp-wMH9Wxa-QI2EIs26NPfcW6oX16aU/s400/SternGerlach.jpg)
One of the most puzzling properties of quantum spin, the intrinsic angular momentum of a particle, is the fact that, once a spatial orientation of spin is measured, it can take only some discrete values. This is in contrast with classical angular momentum that can have a continuous distribution. People say that spin is quantized . The most common measurement procedure is probably by using a Stern-Gerlach apparatus . This measurement consists in sending a beam of particles through an inhomogeneous magnetic field and observing their deflection. With spin-1/2 particles, the result will be that two beams are formed, with some particles deflecting in one direction of the inhomogeinity axis, the others in the opposite direction. This behavior is described within the formulation standard of quantum mechanics by using matricial spin operators. We have already claimed in a previous post that our local-realistic formulation of QM of spin-1/2 particles contains all the elements to correc...