science & techWikipedia1903 · France

Safety glass was discovered in 1903 when a dropped flask did not shatter

the gist

Safety glass began in 1903, when French chemist Édouard Bénédictus dropped a glass flask and noticed it did not shatter like ordinary glass. He refined the idea into laminated glass made of two layers of glass bonded with a thin layer of cellulose nitrate between them. The layer holds fragments together when the glass breaks. He named his invention triplex, patented it in 1909, and it was later mass-produced for car windscreens and other uses. The principle is still used in windscreens today.

so what

Laminated glass is why a cracked windscreen usually stays in one piece instead of showering the driver with shards. It is a small everyday invention that has prevented many injuries.

fun fact

Bénédictus named his invention triplex because it had three layers, two of glass and one of plastic-like film.

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Illustrative photo · Tysto, Public domain, via Wikimedia Commons