204 Table 37t. 



TABLE 371. — Transmission of the Radiations from a Gas-filled Tungsten Lamp, the Sun, a 



Magnetite Arc, and from a Quartz Mercury Vapor Lamp (no Globe) through Various 



Substances, especially Colored Glasses. 



Color. 



Trade name. 



Source.* 



Thick- 

 ness 

 in mm 



Transmission, per cent. 



Gas- 

 filled 

 tung- 

 sten. 



Quartz 

 mercury 

 vapor.f 



Mag- 

 netite 

 arc.t 



Solar 

 radia- 

 tion. 



Greenish-yellow. 



Smoky green . 

 Yellow-green . 



Amber. 



Orange . 

 Yellow . 



Sage green . . . 

 Yellow-green . 

 Blue-green . . . 



Black . 



Neutral tint. 

 Gold plate . 



Colorless. 



(darker). 



Amethyst. 

 Purple. . . . 



Blue 



Blue, dark 



Blue-green 



Blue-green, pale , 



Red-purple 



Blue-purple 



Red 



Colorless. 



Brown. . . 

 Colorless. 

 Clear. . . . 



Fieuzal, B 

 Fieuzal, 63 

 Fieuzal, 64 

 Euphos 

 Euphos, B 

 Akopos green 

 Hallauer, 6s 

 Hallauer, 64 

 G 124, IP 

 Noviweld, 30% 

 Noviweld, shade 3 

 Noviweld, shade 4} 

 Noviweld, shade 6 

 Noviweld, shade 7 



Saniweld, dark 



G34 



Noviol, shade A 



Noviol, shade B 



Noviol, shade C 



Ferrous No. 30 



No. 61 



Lab. No. 59 



G 124 JA 



Smoke, C 



Smoke, D 



Crookes, A 



Crookcs, B 



Pfund 



Pfund 



Lab. No. s8 



Lab. No. 57 



Shade C 



Electric smoke 



Gss A62 



Shade D 



G53 



G 171-IZ 



G584 



G 172 BW s 



G58S 



Selenium 



Flashed 



Window 



Crown 



Mica 



Mica 



Water 



A. O. C. 

 F. H. E. 

 F. H. E. 



B. S. 



B. &L. 

 J. K. 

 B. S. 



F. H. E. 



C. G. W. 

 C. G. W. 

 C. G. W. 

 C. G. W. 

 C. G. W. 

 C. G. W. 



B. S. 



J. K. 

 C. G. W. 

 C. G. W. 

 C. G. W. 

 C. G. W. 

 A. O. C. 

 A. O. C. 



A. O. C. 

 C. G. W. 



B. &L. 

 B. &L. 

 A. O. C. 

 A. O. C. 

 A. O. C. 

 A. O. C. 

 A. O. C. 

 A. O. C. 

 A. O. C. 



A. O. C. 

 C. G. W. 



B. &L. 

 C. G. W. 

 C. G. W. 

 C. G. W. 

 C. G. W. 

 C. G. W. 

 C. G. W. 



Schotts 

 B. S. 

 B. S. 

 B. S. 

 B. S. 

 B. S. 

 B. S. 



I -95 

 2. 10 

 1-93 



1. S3 



2. 26 

 2.4S 

 1.97 

 2.00 



1.58 



2.8s 

 2.09 

 2.51 



3-21 



3-75 

 4-93 

 3-13 

 2.90 

 3-22 



1. 85 

 l.S6 

 1.30 

 0.09 

 10. o 



71.6 



7S-S 



SO. 7 



78.9 



78.8 



84.6 



70.3 



S8.7 



0.4 



S-i 



3.4 



1.6 



0.9 



0.8 



51.6 



78.1 



56.9 



74-1 



3 



S 

 6S 

 50 

 85 

 75-7 



2.6 



83^3 



82.8 

 36.6 

 17.4 

 37-6 

 2.9 

 46.6 

 24.9 

 72.4 

 35.8 

 67.8 

 69.4 



26.9 

 34-3 

 22.0 

 25.0 

 24.7 

 29- S 

 17.7 

 25-9 



O. 2 



7.8 

 4-2 



10.6 



32.2 



17-5 

 28.6 

 17.3 

 21. S 

 31.2 

 16.0 

 46. 1 

 32.0 



7.2 



1-3 

 40.0 

 Si-9 

 44-3 



2. 2 

 17.0 

 20. 7 



3-9 

 41.7 

 25.2 

 26. s 

 34.0 



7-9 



4.8 

 59-5 

 64.9 

 35-4 

 43-1 

 t54.o 



46.0 

 SS-O 



S30 

 S90 



2.7 

 0.8 

 0.2 



43 o 

 s6.o 



ii-S 



12.5 



52.0 

 390 



64.0 

 I. 2 



66 



48 



63 



72 



6^ 



74 



SS 

 9 



SO 

 47 

 81 

 7S 

 72 

 17 

 72 



19 

 60 

 43 

 89 

 69 



41 

 48 

 46 



82 

 92 



* A. O. C, Amer. Optical Co., Southbridge, Mass.; C. G. W., Coming Glass Works, Coming, N. Y.; B. & L., 

 Bausch & Lomb, Rochester, N. Y.; J. K., Julius King Optical Co., New York City; F. H. E., F. H. Edmonds, optician, 

 Washington, D. C; B. S., Bureau of Standards; scrap material, source unknown. 



t Infra-red radiation absorbed by quartz cell containing i cm layer of water. Taken from Coblentz-Emerson & 

 Long, Bui. Bureau Standards, 14, 653, 1918. 



t Transmission of i cm cell having glass windows. 



Smithsonian Tables. 



