Magic Glass Spermy Sculptures Can't Be Broken With A Hammer, But Will Explode If You Touch Their Tails

March 25, 2013


This is a video of Youtuber SmarterEveryDay explaining Prince Rupert's Drops. Prince Rupert's Drops are made by drizzling molten glass into water so it forms a little spermy -- a sperm with an ultra-tough head, but with a delicate tail that will cause the whole thing to explode if nicked. I was going to try to draw a correlation between these sperm and mine, but mine only chase their tails so it was a no-go.

All the weirdness is thanks to they way the droplet cools from the outside in, building up stress that makes it super prone to explosion, in places, but SmarterEveryDay explains it best.

Listen: I love science as much as the next guy who's always dreamed of strapping himself to a rocket and suffocating in space, but sometimes I feel like it gets in the way of just appreciating real-life magic, you know? Thank God for magnets.

Hit the jump for the video.

Thanks to Kaitlyn, who informed me Prince Rupert's Drops make really shitty Christmas ornaments. Good to know.

  • Gabereally

    I wanna see Prince Rupert's Bong!

    that shit probably explodes after you hit it!

  • Billy Rocka

    Could you imagine someone mistaking one as a sex toy? That's an O face you'll never forget.

  • a.k.a. Tempering
    gorgeous example of it!

  • Jed Savage

    Very cool. I was completely unaware of this property of glass. Thanks for the read and the video!

  • Lee

    Thats an awesome nerd, one I hope to be some day. :)

  • Name

    Anyone read the posts in the voice of Roger, from American Dad?

  • ODwanKenObi


  • Chewbacca

    I have a feeling I will from now on...

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