Have you ever heard of a Prince Rupert’s drop? No? That’s alright, the gentleman with the YouTube channel Smarter Everyday has a whole segment regarding the interesting drop of glass and its explosive properties — that’s right, explosive.
A Prince Rupert drop is a phenomenon that occurs when molten glass is dropped into a cold water. It forms a ball with a thin tail. As Smarter Everyday describes it, it looks sort of a like a tadpole.
Amazingly though, the glass cannot be broken. That is, it can’t be smashed — even with a hammer — if it’s hit on the more bulbous part of the glass. A mere tap on the thinner tail portion though will explode the glass.
Watch the amazing properties at work and learn about its composition from Smarter Everyday, but as they suggest “goggle up,” at least virtually, first: