Society of Glass Technology · [Sheffield] · leaf 302
se for the corresponding potassium oxide glasses of the 201 seriesfor (1 per cent. BaO-1 per cent. K20) is 00010. (5) The change in total dispersion for (1 per cent. BaO-1 per cent.Na20) varies from — 0*00003 in the glasses containing 70 per cent,of silica to zero in the glasses containing 50 per… … Variation, yntAcRejjmoUvt- LndeecuUk tfis. BaOamf&nt V&ruUccn m. the- TotaCBaO amXmt
Glass
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