Society of Glass Technology · [Sheffield] · leaf 288
3-8 267279 287295308317 Series 100SiO2,10Na2O, 10K2O,xBaO. 1-50581-51991-53421-54761-56941-5881 8328809219611,0171,073 60-859-158-057-056-054-8 247 261274284300316 637 0-705 666 0-705 689 0-706 708 0-706 738 0-706 766 0-707 585 0-703 619 0-703 647 0-703 677 0-704 717 0-705 757 0-705 THE DEVELOPMENT… … 15 20 25Molecules BaO. Fig. 2 (1) In both series the t/d values increase with increasing bariumoxide. (2) The rate of increase in rjD is greater in the series containingthe smaller amount of alkali oxide. (3) Comparing corresponding glasses in the two series, the 224 JOURNAL OF THE SOCIETY OF GLASS…
Glass
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