Leaving aside for a moment the discussion of the possibility of such orbits, let us investigate what series of stationary states maybe expected from the expressions (14) and (15). In order to determine the stationary states we shall, as in the former section, seek a connexion with ordinary electrodynamics in the region of slow vibrations. Proceeding as on [page 4], suppose when
is large
where
and
denote the energy and the frequency in the