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About: Thoriated glass     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : dbo:ChemicalCompound, within Data Space : dbpedia.org associated with source document(s)

Type: chemical compound New Facet based on Instances of this Class

Thoriated glass is a glass material used in the manufacture of optical systems, specifically photographic lenses. It is useful to this process due to its high refractive index. Thoriated glass is radioactive due to the inclusion of thorium dioxide, oxide of radioactive element thorium. It has therefore been succeeded as a material of choice by glass including lanthanum oxide. Thoriated glass can contain up to 30% by weight of thorium. The thoriated glass elements in lenses over time develop a brown tint reducing transmission and interfering with neutral color reproduction.