One way to visualize this system classically is to think of the electron as comet far removed from the solar system that represents the ionic core.
Spectroscopy | Viktor Rydberg | Raman spectroscopy | Infrared spectroscopy | spectroscopy | Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy | ionization | Fourier transform infrared spectroscopy | Nuclear magnetic resonance spectroscopy | Near-infrared spectroscopy | Mössbauer spectroscopy | Low-ionization nuclear emission-line region | Ionization | International Muon Ionization Cooling Experiment | Absorption spectroscopy | Victor Crus Rydberg | Ultraviolet–visible spectroscopy | Ultraviolet-visible spectroscopy | ultraviolet–visible spectroscopy | Ultrasound attenuation spectroscopy | Soft X-ray emission spectroscopy | Saturated absorption spectroscopy | Rydberg formula | Positron annihilation spectroscopy | Photoemission spectroscopy | photoemission spectroscopy | Penning ionization | nuclear magnetic resonance spectroscopy | Negative air ionization therapy | Jon Rydberg |