ig20. No. 2. 



ON THE X-RAY SPECTRA, 



39 



Ring 

 n . . . 

 q [Fc] . 

 q {Ki) . 

 i? . . . 



I 2 



I 2 



3 7 



3 7 



o s 



8 lo 

 lo i8 



These values of [u, p, q] give us all we want for the determination 

 of v^ from (2^). 



Values of I ^'^ I calculated from (28) and corrected for variation of 



mass with velocity as also the values calculated from observations are 

 given in Table XIX. 



Table XIX. 



We see from the table that the agreement between observed and 

 calculated values is remarkably good, the difference between observed 

 and calculated values being less than i o/q, 



I think this fact strongly supports the correctness of our formula 

 and the assumption on which our theory of A'-ray spectra is founded. 



I also think that the absorption edges may give us some valuable 

 information with regard to the constitution of the surface ring and those 

 nearest to it. 



Discussion of the Results. 

 § 16. 

 In the preceding part of this paper we have discussed the various 

 possibilities with regard to the process of recombination. The various 

 possibilities treated will be seen from the following scheme: 



__^ b. Conservation of 



^,,.^-—''''^^ energy. 



I. Recombination between primaries 



II. Recombination from a disturbed primary 



».Conservation of 

 momentum. 



>r 



III. Recombination from secondaries 



