Society of Glass Technology · [Sheffield] · leaf 91
9 888 59-44 264 624 0-703 E 30 18-86 1-5435 934 58-20 276 658 0-705 F 40 23-65 1-5573 980 56-87 287 693 0-707 * A second series gave for tju :— 163 Type A = 1-5107 165 Type A = =1-4975 B = 1-5184 B = =1-5088 G = 1-5259 C = 1-5196 D = 1-5323 D = =1-5276 E-- = 1-5447 E = 1-5436 F= = 1-5555 F= 1-5582.… … 1000 900 .2 a. eo X 800 THE DEVELOPMENT OF VARIOUS TYPES OF GLASS. PART II. 27 I and II, which represent variation in »jD in the two series withincreased molecular CaO content: — (1) The refractive index increases with increased molecular CaOcontent. (2) The rate of increase falls as the molecular…
Glass
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