Refractive
Indices |
|
|
|
|
706.5 |
1.74908 |
|
656.3 |
1.75357 |
|
643.8 |
1.75485 |
|
632.8 |
1.75606 |
|
589.3 |
1.76158 |
|
587.6 |
1.76182 |
|
546.1 |
1.76859 |
|
486.1 |
1.78226 |
|
480.0 |
1.78403 |
|
435.8 |
1.79981 |
|
404.7 |
1.81558 |
|
365.0 |
|
|
|
|
|
|
|
|
Constants of Dispersion
Formula |
|
2.9710918 |
|
-5.8849058 10 |
|
4.411578710 |
|
3.323883310 |
|
1.672912510 |
|
4.527617610 |
|
Relative Partial Dispersions
|
|
0.2875 |
|
0.2389 |
|
0.2360 |
|
0.2320 |
|
0.6116 |
|
0.5407 |
|
|
|
0.0014 |
|
0.0111 |
|
Chemical
Properties |
|
Grade |
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|
1 |
.gif)
|
3 |
|
1 |
|
3 |
|
ThermalProperties |
.gif)
|
456 |
.gif)
|
508 |
|
404 |
|
441 |
|
79 |
|
86 |
|
Mechanical
Properties |
|
378 |
|
|
|
5851 |
|
2355 |
|
0.242 |
|
Stress-Optical
Coefficient |
|
|
|
Coloration
Code |
|
43/38 |
|
|
|
Other
Properties |
|
4.64 |
|
|
|
Internal
Transmittance |
|
|
|
2400 |
0.967 |
0.936 |
2200 |
0.974 |
0.949 |
2000 |
0.987 |
0.974 |
1800 |
0.992 |
0.985 |
1600 |
0.998 |
0.996 |
1400 |
0.999 |
0.998 |
1200 |
0.999 |
0.998 |
1060 |
0.999 |
0.998 |
1000 |
0.999 |
0.998 |
950 |
0.999 |
0.998 |
900 |
0.999 |
0.998 |
850 |
0.999 |
0.998 |
800 |
0.998 |
0.997 |
700 |
0.998 |
0.997 |
650 |
0.998 |
0.996 |
600 |
0.998 |
0.996 |
550 |
0.997 |
0.995 |
500 |
0.994 |
0.989 |
480 |
0.991 |
0.983 |
460 |
0.987 |
0.974 |
440 |
0.977 |
0.955 |
420 |
0.951 |
0.904 |
400 |
0.84 |
0.71 |
390 |
0.68 |
0.46 |
380 |
0.37 |
0.14 |
370 |
0.07 |
|
360 |
|
|
350 |
|
|
340 |
|
|
330 |
|
|
320 |
|
|
310 |
|
|
300 |
|
|
290 |
|
|
280 |
|
|
|
1.76182 
26.55
0.028692
1.76859 
26.34
0.029178