Society of Glass Technology · [Sheffield] · leaf 495
Fig. 68. 25 20 15 /4i 0~ //r ^ ..■;:/ S0^ ./■ ;■ J^Sno^ *gP 5 10 15 Fig. 69. … GLASS : MANUFACTURE AND PROPERTIES. 95 Many of the results obtained by a study of the effect of chemicalcomposition on density, refractive index, dispersion, devitrification,
Glass
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