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Bulletproof Glass

(credit: CBS)

Good Question: What Makes Glass Bulletproof?

An Idaho man has been charged with trying to assassinate the President of the United States by allegedly firing an AK-47-style gun at the White House. But his bullet hit a reinforced White House window that most of us would call “bulletproof.” So how does a piece of glass become bulletproof?

11/18/2011

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