EntityQ5458983· pop 5· linked from 6 articlesflexible glassSign in to savealleged lost inventionConnectionsgoldEntitysilverEntityInternational Standard Book NumberEntityhammerEntityPliny the ElderEntityTiberiusEntityoptical fiberEntityPetroniusEntityIsidore of SevilleEntityEarly Middle AgesEntityGreek fireEntitytogaEntityNatural HistoryEntityplanned obsolescenceEntitykylixEntitySatyriconEntityRoman concreteEntityGorilla GlassEntityQ665934EntityRobert Jacobus ForbesEntityCategoriesGlass engineering and scienceGlass typesGreek inventionsHistory of glassLost inventions