All About Glass
All About Glass
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.
Article
The most dangerous part of a sailing trip used to be returning to shore. Lighthouses were built to signal the safest route, but often the weak light from their lamps was not visible until too late. The large, thick lens that was supposed to project the light absorbed much of the signal. Hollowing