This is your resource for exploring various topics in glass: delve deeper with this collection of articles, multimedia, and virtual books all about glass. Content is frequently added to the area, so check back for new items. If you have a topic you'd like to see covered, send us your suggestion. If you have a specific question, Ask a Glass Question at our Rakow Research Library.

Continuous Perfection: Optical-Quality Glass
Article

They make glass. By day and night, the fires burn on … and bid the sand let in the light.      — Carl Sandburg, In Reckless Ecstasy, 1904. To see the unseeable: the quest is unending. But lenses and prisms are only as good as their glass. Optical-quality glass must be flawless. Even tiny flecks,