University of Wisconsin-Madison - PRINCE RUPERT'S DROPS: shown here, are a curious glass formation popularized in the 1600s. Molten glass is dripped in cold water to rapidly cool and temper the exterior,
![Vance Williams on Twitter: "#SciArtTweetStorm Prince Rupert's Drop viewed under polarized light; the color shows the internal stress in the glass #sciart #glass https://t.co/Z1N1fjzkUu" / Twitter Vance Williams on Twitter: "#SciArtTweetStorm Prince Rupert's Drop viewed under polarized light; the color shows the internal stress in the glass #sciart #glass https://t.co/Z1N1fjzkUu" / Twitter](https://pbs.twimg.com/media/D1A5d7JVsAA6353.jpg:large)
Vance Williams on Twitter: "#SciArtTweetStorm Prince Rupert's Drop viewed under polarized light; the color shows the internal stress in the glass #sciart #glass https://t.co/Z1N1fjzkUu" / Twitter
![Prince Rupert's Drops: An analysis of fragmentation by thermal stresses and quench granulation of glass and bubbly glass | PNAS Prince Rupert's Drops: An analysis of fragmentation by thermal stresses and quench granulation of glass and bubbly glass | PNAS](https://www.pnas.org/cms/asset/cbdbdb1f-fba5-4b73-9103-8548d7ce9148/keyimage.jpg)