= Solutions of the Dirac equation
Related: <Dirac equation vs quantum electrodynamics>.
\Video[https://www.youtube.com/watch?v=tR6UebCvFqE]
{title=Quantum Mechanics 12b - Dirac Equation II by <ViaScience> (2015)}
{description=
* https://youtu.be/tR6UebCvFqE?t=23 particle at rest
* https://youtu.be/tR6UebCvFqE?t=322 unidirectional movement without a potential
* https://youtu.be/tR6UebCvFqE?t=507 shows that observers in different <frame of reference>[frames of reference] also see different <spin (physics)>. We are reminded of how <Maxwell's equations require special relativity>[magnetism is just a side effect of special-relativity].
* https://youtu.be/tR6UebCvFqE?t=549 <Dirac equation solution for the hydrogen atom>, final result only + mentions <fine structure> prediction.
}