for all atoms excepting those of H and He+, for which it is equal to 2. The convergence of the series for
was not established by Fowler and Milne, but the authors regard the subsequent investigation by Urey[376] as justifying their assumption that “for physical reasons one must suppose the series effectively cut off after a certain number of terms. Usually the series then reduces (as regards its numerical value) practically to its first term.”
PHYSICAL CONSTANTS REQUIRED IN THE FORMULAE
The application of the equations will of course depend upon an accurate knowledge of the constants involved. The quantities
,
,