“All integral laws of spectral lines and of atomic theory spring originally from the quantum theory. It is the mysterious organon on… — Arnold Sommerfeld Copy Share Image
The movement of the emitters of the spectral lines may be deduced on the basis of the Doppler principle. — Johannes Stark Copy Share Image
We can in fact first place the beam of rays of moving positive atomic ions in a plane perpendicular to the axis… — Johannes Stark Copy Share Image
