Tables 168-170. INDEX OF REFRACTION. 



TABLE 168. -Index ol Relraotlon of Rock Salt In Air. 



183 



=«2+: 



Afi 



^+. 



Mo 



A2 — Ai2 ' A2 — A.22 



where fl'2=2.330i65 

 ^1/1=0.01278685 

 Ai2=o.oi48500 

 il/2= 0.005343924 



-k\^ — h\''OX = b'^^; 



Mx 



A2-Ai2 



=0.02547414 



=0.0009285837 



=0.000000286086 



+ 



Mo. 



M. 



A2 — A22 A32 — A2 



/^2=5.6Soi37 



yl/8= 12059.95 



A32 = 36oO. (P) 



TABLE 169.— Change of Index of Refraction for lo C In Units of tbe Sth Decimal Place. 



L Annals of the Astrophysical Observatory 

 of the Smithsonian Institution, Vol. I, 1900. 

 M Martens, Ann. d. Phys. 6, 1901, 8, 1902. 

 Mi Micheli, Ann. d. Phys. 7, 1902. 



P Paschen, Wied. Ann. 26, 1908. 

 PI Pulfrich, Wied. Ann. 45, 1892. 

 RN Rubens and Nichols, Wied. Ann. 60, 1897. 



TABLE 170.— Index of Refraction of Sllvlne (Potassium Chloride) In Air. 



^,%= 



a2+: 



Mx 



-^■^■■ 



Mo 



-kX'—hK^ ox^b--\- 



Mx 



A2- 



. + : 



Mo 



^+: 



M^ 



A-'- Ai"-* ■ A2 — A22 



fl2=r 2.174967 A22 = 0.0255550 



y^l ^0.008344206 /■= 0.0005 1 3495 



Ai2=o.ori9o82 ^^0.000000167587 



71/0=0.00698382 



W Weller, see Paschen's article. Other references as under Table 169, above. 

 Smithsonian Tables. 



■Ai2 ■ a2— A22^ A32— A3 



<^2= 3.866619 

 .1/3=5569.715 



A32 = 3292.47 (P) 



