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Journal (1917)
Society of Glass Technology · [Sheffield] · leaf 496
GLASS : MANUFACTURE AND PROPERTIES. 95 Many of the results obtained by a study of the effect of chemicalcomposition on density, refractive index, dispersion, devitrification, … .^y/ 9 / , £ S^ Li—- -o rl nf^c 55 a 111^ ~~Ills ^ ? 2 1 a /I lli ~ Up / ¥ v Value.Fig. 72. / p/y /4 //A ^^ / ^ •u^- // _^- ^ ^ -_SrO Xo A^r- \ *i7 S$ 57 U Percentage RO(Silica 70 per cent.). Fig. 73. 5 10 15 5 10 15 Percentage RO Percentage RO (Silica 70 per cent.). (Silica 70 per cercJ.) Fig. 74.…Glass
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