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. It is usually made from a combination of two or more types of glass, one hard and one soft.[1] The softer layer makes the glass more elastic, so that it can flex instead of shatter. The index of refraction for all of the glasses used in the bulletproof layers must be almost the same to keep the glass transparent and allow a clear, undistorted view through the glass. Bulletproof glass varies in thickness from 3⁄4 to 3+1⁄2 inches (19 to 89 mm).[2][3]
Bulletproof glass is used in windows of buildings that require such security, such as jewelry stores and embassies, and of military and private vehicles.
- ^ "How Ballistic Glass Is Made". Insulgard Security Products. 2020-07-08. Retrieved 2021-05-11.
- ^ Bertino, AJ, Bertino PN, Forensic Science: Fundamentals and Investigations, Cengage Learning, 2008, p. 407
- ^ "Bullet Resistant Glass & Laminates: Military Vehicles Humvees Protection". Usarmorllc.com. 2013-12-31. Archived from the original on 2014-05-01. Retrieved 2014-08-04.