200 400 600 800 0.02 0.04 0.06 0.08 0.10 0.12 0.14 200 400 600 800 - 0.0010 - 0.0008 - 0.0006 - 0.0004 - 0.0002 32 FIG. 10: The normalized hydrogen atom ground state lower component wave functions f ( x ) (solid curve) and ψ$_{b}$ ( x ) = f ( x ) /x (dashed curve). Note the smallness of these wave functions compared to those for the upper component. FIG. 9: The normalized hydrogen atom ground state upper component wave functions g ( x ) (solid curve) and ψ$_{a}$ ( x ) = g ( x ) /x (dashed curve).