On the quantum theory of radiation and the structure of the atom

by Niels Bohr

by the help of Moseley’s. empirical formula, Kossel showed that the first relation was closely satisfied for the elements from calcium to zinc. Recently T. Malmer[32] has measured the wave-length of

and

for a number of elements of higher atomic weight, and it is therefore possible to test the relation over a wider range and without extrapolation. The table gives Malmer’s values for

and Moseley’s values for

, all values being multiplied by