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Bulletproof glass of a jeweler's window after a burglary attempt. The Mona Lisa behind bulletproof glass at the Louvre Museum. Bulletproof glass, ballistic glass, transparent armor, or bullet-resistant glass is a strong and optically transparent material that is particularly resistant to penetration by projectiles, although, like any other material, it is not completely impenetrable.
Aluminium oxynitride has less than half the weight and thickness of glass-based transparent armor. [10] Aluminium oxynitride armor of 1.6-inch (41 mm) thickness is capable of stopping .50 BMG armor-piercing rounds, which can penetrate 3.7 inches (94 mm) of traditional glass laminate. [8] [11]
The glass, which is much harder than plastic, flattens the bullet and thereby prevents penetration. This type of bullet-resistant glass is usually 70–75 mm (2.8–3.0 in) thick. Bullet-resistant glass constructed of laminated glass layers is built from glass sheets bonded together with polyvinyl butyral, polyurethane or ethylene-vinyl acetate.
The Mona Lisa behind bulletproof glass at the Louvre Museum Bullet-resistant body armor has been in use since about 1984. When law enforcement began wearing body armor, there was a dramatic drop in officer deaths, saving over 3,000 lives.
Secret Service beefs up security for Trump, including with bulletproof glass. Holmes Lybrand, CNN. August 15, 2024 at 2:46 PM. Evan Vucci/AP.
Trump campaigns behind bulletproof glass in first outdoor rally since assassination attempt. August 21, 2024 at 4:32 PM. Pool photo.
The three removable roofs were replaced by a fixed glass enclosure that cost more than $125,000; the glass enclosure was made of 13 different pieces of bulletproof glass ranging in thickness from 1 to 1 + 13 ⁄ 16 inches (25 to 46 mm), and was then the largest piece of curved bulletproof glass ever made. [9]
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