356 Tables 386-387— INDEX OF REFRACTION OF GLASS 



TABLE 386. — Relationship between nx — nv and no' — no 



Abscissae are n x — nn, ^=2.4, 2.2, 2.0, 1.8, 1.6, 1.4, 1.2, 1.0, 0.8, .768, .656, 

 •589, -535, 5°9> 486, .480, .468, .434, -361, -347, -327, -313. -308,-298, .288, 284, 

 276/j.. Ordinates n G > — « D for glasses measured by Rubens and Simons. Various 

 Schott glasses included: O1092, light barium crown, (^=1.51698) ; S204, 

 borate glass, (1/0=1.51007); O1143, dense barium crown, (h d = 1.57422) ; 

 O1151, high-dispersion crown, (n D = 1.52002) ; O451, light flint, (;? D 

 = 1.57524); O469, dense flint, (« D = 1.64985) ; O500, dense flint, (n D 

 = 1.75130) ; S163, extra dense flint (n D = 1.88995). 



TABLE 387. — Effect of Composition on Index of Refraction 



Smithsonian Tables 



