Bohr explained the phenomena of the hydrogen spectrum by hypothesizing that the electric influence of the electrons interacting with the magnetic influence of the nucleus produces electromagnetic waves corresponding to the frequencies of the observed spectrum the wavelengths of light observed in the spectrum correspond to the radii of the allowable orbitals of the atom discrete frequencies of light are emitted when a transition between two allowable energy states of the atom takes place electrons have angular momentums corresponding to the energies of light observed in the spectrum