Society of Glass Technology · [Sheffield] · leaf 146
15 20 Molecules CaO. Fig. 4. THE DEVELOPMENT OF VARIOUS TYPES OF GLASS. PART V. 81 (3) In the series 100SiO2,40R2O,a:CaO, where the molecular CaOvalue is greater than 75, the Na20 glass has a higher refractiveindex for the D line than the corresponding K20 glass. From Fig. 4 1000 900 Total… … 800- CurveI. Series. iooS^ , w^0, xdOCurve II. Series. icoStq.2oNa2O;2oK^.x&0Curven.Series. \ooSl<\ . 40^0. x&o CuavE JLSeries. loo&q ZOHaxOj x.dOCurve ¥. Series. looSiC^ioNajCyoKjO.rc&OCurve ¥1.Series. iooSjq7 zoY^o7 x&o Curve ILSeries. lOoSiO^ ■is-ibK201 xGO 10 15 20…
Glass
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