Society of Glass Technology · [Sheffield] · leaf 140
10 15 20 Molecules R0.Fig. 5. For the same two glasses, the rise in total dispersion per moleculePbO substituted for CaO is 0-00032. (2) In the case of the CaO glasses of the 100SiO2,?/R2O,a-RO THE DEVELOPMENT OF VARIOUS TYPES OF GLASS. PART X. 79 series the Na20 glass has the higher Vd and higher… … 10 15 20 Molecules PbO.Fig. 7. than 9 molecules. In the corresponding PbO glasses, the K20glass has slightly the higher 7,D value and total dispersion, althoughthe difference between the Na20 and K20 glasses is not very 80 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. marked. The difference is much…
Glass
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