Some Aspects of the Manufacture of Opal Glass

JSGT 1932 V16 T399-T407

 The paper shows how use was made of the work of Ryde & Cooper on “The Scattering of Light by Turbid Media”' to ascertain and obtain the conditions necessary for the successful manufacture of opal glass. Control of the opalising materials in the case of fluorides is essential both because of their volatility under varying conditions and also because of corrosion of the refractories which they bring about, whereby the iron compounds dissolved cause a substantial increase in the light absorbed. Reference is made to works tests on lighting glassware. Some characteristics of flashed opal glasses, pot-opal sheet, and “Diffusalyte” are described.

W. M. Hampton