🌐EnglishEnglishDeutschРусский日本語EntityQ931139· pop 6· linked from 32 articlesLow dispersion glasslens glass material with reduced refractive index shift with wavelengthAvailable in 6 languagesDeutsch日本語РусскийCatalanIrishvia Wikidata sitelinks · CC0ConnectionsglassEntityrefractive indexEntityCategoriesGlass compositions