High Frequency Spectra of Elements Gold-Uranium. 405 



Element. 



Ordinal. 



N. 



Wave-length. 

 X a . 10 8 cm. 



xio- 4 . 



Qr= 



N-Q L =6. 



Au 



79 

 SO 

 81 

 82 

 83 



9o' 



92' 



1-280 

 1-243 

 1-209 

 1-179 

 1-144 



0-971 



0-919 



0-884 

 0-897 

 0-909 

 0-921 

 0-935 



1-015 



1-043 



71-6 

 72-7 

 73-7 

 746 



75-7 



82-2 

 84-5 



7-4 

 73 

 73 

 7-4 

 73 



7-8 



7-5 



H<* 



Tl 



Pb 



Bi 



Th ......... 



U ......... 



The graphic representation of the values \ / - = ^/ v in 



fig. 1 shows that thorium as 90 and uranium as 92 give a 

 linear relation between ^/^ricl-N. This succession of the 



Fisr. 1. 



0,900 m 



0,850 



'9 60 81 82 83 84 85 86 87 68 89 90 91 92 ?<l 



heaviest elements perfectly agrees with the system of J. R. 

 Rydberg *. A numerical comparison of the values after the 

 relation given by Moseley, 



»-Vjt->. 



a* 



shows further that our values agree very well with those 

 * Lunds Univ. Arsskr. N. F. Afd. 2, Bd. 9. Nr. 18, 1913. 



