XXth century_physics

Nagaoka’s Nagaoka s atomic model of 1904
Hantaro Nagaoka
The oscillations perpendicular to the plane of the electron
ring were shown to lead to a spectrum having a band-like
structure and the oscillations in the plane - to a kind of line
spectrum. The α- and β-rays were emitted when the
electron ring and the atomic nucleus broke up because of
large disturbances.
Phil. Mag. 7, 445 (1904)