Prince Rupert’s Drops
- Prince Rupert's drops (also known as Dutch tears or Batavian tears) are toughened glass beads created by dripping molten glass into cold water, which causes it to solidify into a tadpole-shaped droplet with a long, thin tail.
- The drops are named after Prince Rupert of the Rhine, who brought them to England in 1660, although they were reportedly being produced in the Netherlands earlier in the 17th century and had probably been known to glassmakers for much longer.
- These drops are intrinsically characterized by very high residual stress, which gives rise to counter-intuitive properties. For example – such as ....
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