.TOriiNAL OF ■I'llK COLLllGK OV S IKNCE. ■L'uKVO IMPERIAL rMVKHSlTY. 



VOL. XLI., ARTICLE 8. 



Magnetic Separations of Iron Lines in 

 Different Fields. 



Ey 

 Yutaka TAKAHASHI, Uiyakushi. 



With 13 Plates. 



Introduction. 



As a recent development of the atomic tîieoiy, various 

 hypotheses have been proposed to illustrate tlie atomic structure 

 from the point of view as revealed by radiation. In spite of the 

 divergence of the various theories, they all agree in attributing 

 the origin of the spectrum lines to the moving electrons in the 

 atom. Prof. Nagaoka has suggested that, if such an atom is 

 placed in a magnetic field, the mutual influence between the 

 electrons may give rise to the separation of some spectrum line, 

 which is not proportional to the magnetic field. 



In some series lines with complex structure many in- 

 vestigators^^ have observed anomalous Zeeman separations, and 

 it is known as a general ruie that each component, showing its 

 own Zeeman separation in weak fields, either disappears or unites 

 with others when the field is increased, and as a whole tends- to 

 the normal triplet in a sufficiently strong field ; consecjuently the 

 separation is not generally proportional to the field. But to 



1) Pa!scli< n u. Back, Ann. d. Physik, 39 ;i912) p. 897 : 40 (1913) p. 960. 

 Fortrat, C. R., 156 (1913; p. 1607 ; 157 (1913) p. 636. 



Na;aokaand Takamine, Proc. Tokyo Math.-Phys. Soc, [2], 7 (1913) p. 188; (1914) p. 

 331 ; Phil. Ma?., 27 (1914 p. 333 ; 29 (1915) p. 241. 



Wood and Kimura, Astrophys. Jour. 46 (1917) p. 197. 



