TABLE 535.— INDEX OF REFRACTION OF SYLVITE 519 



(POTASSIUM CHLORIDE) IN AIR 



TABLE 536.— INDEX OF REFRACTION OF POTASSIUM BROMIDE* (22°C) 



Wavelength Index 



.4047 1.589752 



.4358 1.581479 



.4861 1.571789 



.5086 1.568475 



.5461 1.563928 



.5876 1.559965 



.6438 1.555858 



.7065 1.552447 



1.2140 1.54408 



1.1287 1.54258 



1.3621 1.54061 



Wavelength Index 



1.7011 1.53901 



2.440 1.53733 



2.730 1.53693 



3.419 1.53614 



4.258 1.53523 



6.238 1.53288 



6.692 1.53225 



8.662 1.52903 



9.724 1.52695 



11.035 1.52404 



11.862 1.52200 



Wavelength Index 



14.29 1.51505 



14.98 1.51280 



17.40 1.50390 



18.16 1.50076 



19.01 1.49705 



19.91 1.49288 



21.18 1.48655 



21.83 1.48311 



23.86 1.47140 



25.14 1.46324 



Prepared by Stephens, Plyler, Rodney, and Spindler, National Bureau of Standards, March 1952. 



TABLE 537.— INDEX OF REFRACTION OF NITROSO-DIMETHYL-ANILINE (WOOD) 



Nitroso-dimethyl-aniline has enormous dispersion in yellow and green, metallic absorption 

 in violet. 



