28o 



Tables 333-336. 

 INDEX OF REFRACTION. 



TABLE 333. — Index of Refraction of Fluorlte In Air. 



„-i = <z2 -f 



Mt 



X2— Xi-^ 

 where a'^ = 2.03882 

 i1/i = 0.0062183 

 Ai"^ 0.007706 

 ^ = 0.0031999 



■£'X2— /X^or = ^^-+-- 

 y = 0.000002916 

 ^" = 6.09651 

 ^72 = 0.0061386 

 X»2 = 0.00884 



Mo 



T+ 



M. 



A2 — A,2 



^/3= 51 14.65 

 Ar-= 1260.56 



A„ ^ 0.0940/1 



^■• = 35-51* 



(P) 



TABLE 334. —Change of Index of Refraction for 1°0 In Units of tbe 6tli Decimal PlaM. 



C line, — 1.220; D, — 1.206; F, — 1.170; G, — 1.142. (PI) 



TABLE 335. —Index of Refraction of Iceland Spar (CaCOa) In Air. 



C Carvallo, J. de Phys. (3), 9, igoo. 



M Martens, Ann. der Phys. (4) 6, 1901, 8, 1902. 



P Paschen, Wied. Ann. 56, 1893. 



PI Pulfrich, Wied. Ann 45, 1892. 



RA Rubens-Aschkinass, Wied. Ann. 67, 1899. 



S Starke, Wied. Ann. 60, 1897. 



TABLE 336. —Index of Refraction of Nltroso-dlmethyl-anlllne. (Wood.) 



Nitrosodimethyl-aniline has enormous dispersion in yellow and green, metallic absorption in violet. See Wood. 



Phil. Mag 1903. 



Smithsonian Tables. 



