Ancient technology: Saxon glass-working experiment - YouTube
The Glass Age, Part 1: Flexible, Bendable Glass - YouTube
The Glass Age, Part 2: Strong, Durable Glass - YouTube
Why the Heck Is Glass Transparent? - YouTube
【毕导】这是科学史上最难理解的悖论 #科普 #冷知识 #悖论 - YouTube
Is Glass a Liquid? - YouTube
The Quest To Make Unbreakable Glass - YouTube
How Communists Made Unbreakable Glass - YouTube it violates planned obsolescence,