Light Absorption and Fluorescence. 

 Values of (/*-l)10 8 . 



641 



X. 



Calculated. 



Observed. 



Differences. 



6708 



77548 



77563 



-15 



6438 



77691 



77703 



-12 



5709 



78121 



78121 







5770 



78137 



78135 



+2 



5461 



78406 



78400 



+6 



5209 



78659 



78651 



+8 



5086 



78798 



78791 



+7 



4800 



79166 



79166 







Ammonia. 



X (infra-red band) =2*95 yu, *, whence v y = 1-01695 x 10 14 . 



In this case the value of — =28, and therefore the following- 

 formula was used : v 9 



2-9555 xlO 27 



^-1 = 



MoFT^W' where 8108,1 x 1027== (28 ^ )2 ' 





Values of 



Ga-l)10 8 . 





X. 



Calculated. 



Observed. 



Differences. 



6708 



37373 



37376 



-3 



6438 



37458 



37455 



+3 



5790 



37700 



37701 



-1 



5770 



37707 



37707 







5461 



37857 



37860 



-3 



5209 



38006 



38002 



+4 



5086 



38086 



38083 



+3 



4800 



38296 



38300 



-4 



Nitric Oxide. 



X (mean of the two closely situated infra-red bands) 

 = 5-33/xt, whence i^ = 0-56235 x 10 14 . In this case the 



value of — =62, and the following formula was used: 



Vy 



3-5261 xlO 27 



,-1 = 



12233-8 X 10" -*> Where 12233 ' 8 X 1027 = < 6 V* 



* Coblentz, Carnogie Institution Publications No. 35, p. 53 (1905). 

 f Warburg and Leithauser, Ann. der Physik, xxviii. p. 813 (1909). 



