Tables 186-188. INDEX OF REFRACTION. 



TABLE 186. — Index ol Retraction of Rook Salt In Air. 



185 



= «2+: 



Ml 



i+. 



M2 



-k\'^—h\^ 01 = 5"^ + 



A2 



Ml . M2 



M. 



where «2=: 2.330165 

 J/i= 0.0 1 278685 

 Ai'-^=o.oi485oo 

 71/2=0.005343924 



TABLE 187.— Change of Index of Refraction for lo C In Units of the 5th Decimal Place. 



A.o2=o.o25474i4 

 /.=o.ooo9285837 

 A = 0.000000286086 



A3- — V^ 

 ^2=5.680137 

 ^73=12059.95 

 A3'^=36oo. (P) 



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 188. —Index of Refraction of Silvlne (Potassium Chloride) In Air. 



A(m). 



0.185409 

 .200090 

 .21946 



•257317 

 .281640 

 .308227 

 .358702 



•394415 

 .467832 

 .508606 



•58933 

 .670S2 

 •7S576 

 .88398 

 .98220 



1.82710 

 1.71870 

 1.64745 

 1.58125 

 1.55836 



1. 54136 



1.52115 



1.51219 



1.50044 



1.49620 



1.49044 



1.4S669 



1.483282 



1. 481422 



1.480084 



Obser- 

 ver. 



M 



K{^). 



1. 1786 



1.7680 



2.35728 

 2.9466 



3-5359 

 4.7146 



5-3039 

 5-8932 



1 .4783 1 1 



1.47824 



1.475890 



1.47589 



1.474751 



1-473834 



1-47394 



^•473049 



1.47304 



1. 47 1 122 



1-47129 

 1. 4700 1 3 

 1.47001 

 1 .468804 

 1.46S80 



Obser- 

 ver. 



P 



w 

 p 



w 

 p 



w 

 p 

 w 

 p 

 w 

 p 

 w 

 p 

 w 



A(fx). 



8.2505 

 8.8398 



10.0184 



11.786 

 12.965 



14.144 

 15.912 

 17.680 



20.60 



22. 5 



1.462726 

 1.46276 

 1.460858 

 1 .46092 

 1.45672 



1.45673 

 1.44919 

 1.44941 

 1.44346 



1.44385 



1.43722 



1.42617 



1. 4 1 403 



1.3882 



1.369 



Obser- 

 ver. 



P 

 W 

 P 

 W 

 P 

 W 

 P 

 W 

 P 

 W 

 P 



RN 



ffi=a^^ 



Ml 





A- — Al 



rt2 = 2. 174967 

 il/l = 0.008344206 

 Ai^^O.OI 19082 

 jl/2 = 0.00698382 



W Weller, see Paschen's article 

 Smithsonian Tables. 





+ 



A22 = 0.02 55550 



X'= 0.0005 1 3495 

 A = 0.000000 1 67 587 



^2=3.866619 

 ^73=5569.715 

 A3- = 3292-47 



M3 



(P) 



Other references as under Table 187; above. 



