POLARIZED SPECTRA OF DOUBLE CHLORIDES. 



105 



components (B w , C w , etc.). The lengths of the bands give an approxi- 

 mate idea of their intensities, although the difference in intensity 

 between a strong C band and a weak A band can not be shown to 

 advantage in such a diagram. The positions of the crests of the bands 

 are taken from the observed values, to be found in table 35, but the 

 width and form of the bands are more or less arbitrary, being the 

 expression of a judgment based on a large number of observations. 



GREEN 



URANYL POTASSIUM CHLORIDE 

 C, 



POLARIZED FLUORESCENCE GROUPS 4-20 



URANYL AMMONIUM CHLORIDE 



L 



\! 



WHITE 



V 



URANYL RUBIDIUM CHLORIDE 





GREEN 



WHITE 



v 



A,. 



GREEN 



WHITE 



URANYL CAESIUM CHLORIDE 

 C, 



GREEN 



WHITE 



FIG. 71. 



From this figure it will be seen that bands C, E, and A of uranyl 

 potassium chloride appear as doublets, polarized at right angles. 

 Band B has no green component visible, but, as will be shown in a 

 subsequent paragraph, at 185 a green component is present, which 

 lies nearer the red than B w . Bands C g and C w are the two components 

 of band C, while no component of band D has been found on the white 

 side. Bands E and A are also well resolved; the white component of 

 band E is of longer wave-length than the green component, while the 

 white components of C and A, and probably of B, are of shorter wave- 

 length than their respective green components. 



