> Simpler, for an electron, where in the wave function is the spin of the electron? https://en.wikipedia.org/wiki/Dirac_equation https://en.wikipedia.org/wiki/

> Simpler, for an electron, where in the wave function is the spin of the electron? https://en.wikipedia.org/wiki/Dirac_equation https://en.wikipedia.org/wiki/Dirac_equation “There are four components in ψ because the evaluation of it at any given point in configuration space is a bispinor. It is interpreted as a superposition of a spin-up electron, a spin-down electron, a spin-up positron, and a spin-down positron.”