For example On accessing ferric oxide in ordinary fused glass a brown coloured glass produces. Also various accessible substances produce different colours in the glasses. In making costly glass containers or vessels etc.ĭuring the preparation of glasses its various components or constituents in the molten or fused state are sometimes altered (replaced) or more appropriately some extraneous substances like metallic oxides are accessed or added, then glasses become coloured. Potassium Carbonate, lead Oxide and Silica In making laboratory equipments and pharmaceutical containers or vessels. In making glass container and laboratory equipments, glass utensils which are heated up to very high temperature.
Potassium Carbonate, Calcium Carbonate and Silica In making of electric bulbs, lenses of camera and telescope etc. In making tube light, bottles, equipments of laboratory, daily useable domestic utensils Sodium Carbonate, Calcium Carbonate and Silica Thus it is used in making bulb of ultraviolet lamp, in making container of chemical reagents, laboratories equipments etc. Quartz glass: This is also called silica glass because it is obtained by melting silica and ultraviolet rays emerge out through it.
Such glasses are also used in making electric bulbs, lenses of telescopes, microscopes, camera and prisms, etc.Ĭrown glass: Usually this is a soda-lime-silica glass and it is frequently used in making lenses of eye glasses.Ĭrookes glass: In this glass mainly cerium oxide (CiO 2) is present which sharply absorbs the ultraviolet rays from the sunlight so utilised in making lenses of eye glasses. Flint Glass: It is manufactured from sodium, potassium and lead silicates which are used in making idol objects of cultural importance, costly glass equipments or devices.
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