The main assumptions used in the present paper are:—
1. That energy radiation is not emitted (or absorbed) in the continuous way assumed in the ordinary electrodynamics, but only during the passing of the systems between different “stationary” states.
2. That the dynamical equilibrium of the systems in the stationary stages is governed by the ordinary laws of mechanics, while these laws do not hold for the passing of the systems between the different stationary states.
3. That the radiation emitted during the transition of a system between two stationary states is homogeneous, and that the relation between the frequency
and the total amount of energy emitted
is given by
, where