This man names a length scale equal to H bar over the electron rest mass times C time alpha which is proportional to the mean
This man names a length scale equal to H bar over the electron rest mass times C time alpha which is proportional to the mean radius of the ground state hydrogen orbit and longer than the Compton wavelength. One model by this man reproduced the Rydberg formula. The Sommerfeld-Wilson quantization condition extended this man's early work on a certain quantum mechanical model, which assumed that electrons traveled in circular orbits and would later be replaced by Heisenberg's quantum theory. For 10 points, name this Danish physicist whose model of the atom displaced Rutherford's.
This man names a length scale equal to H bar over the electron rest mass times C time alpha which is proportional to the mean radius of the ground state hydrogen orbit and longer than the Compton wavelength.