NDLI: NOVA Online | Walls of Glass

Content Provider	PBS LearningMedia
Copyright Year	1996
Description	Learn how glass—a material usually considered fragile, and dangerous if shattered—can be made into a strong, safe wall in this video from NOVA Online. Several treatment methods were used for the glass panes that make up the new One World Trade Center building. Heat tempering makes the glass tough enough to handle severe weather conditions. A polyurethane coating serves two purposes:first, to keep the glass from shattering upon impact with another object; and second, to keep the glass from getting too hot from the sun's rays. The second purpose also enables the building to be super green and LEED certified.
Sponsorship	PBS
Language	English
Publisher	PBS Learning Media
Publisher Date	2014-06-22
Access Restriction	Open
Rights Holder	WGBH Educational Foundation
Subject Keyword	Science Physical Science Matter and Interactions Atomic Bonds and Molecules Materials Properties of Matter Engineering & Technology Systems & Technologies Energy and Power Manufacturing and Materials Polymers Identifying Properties of Materials Physical and Chemical Changes Heating and Cooling Materials
Content Type	Video
Educational Role	Teacher Student
Education Level	Class XI Class VII Class VIII Class IX Class XII Class VI Class X
Resource Type	Broadcast
Subject	Chemical Bonding and Molecular Structure

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NOVA Online | Walls of Glass