A Prince Rupert’s Drop is a very interesting demonstration in physics that shows both the strength that a well-organized crystal structure can provide, as well as how violently such a structure can be blown to pieces by stress if the crystal pattern is disrupted.
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Made by rapidly cooling a drop of molten glass in cold water, Prince Rupert’s Drops are formed in a teardrop shape that demonstrate extraordinary strength on the largest end, easily surviving strikes from a hammer. Despite the strength in the front, if the narrow tail is so much as scratched the crystal pattern that makes the… more


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