At our tour of Mayo, the scientific glass blower showed us a Prince Rupert’s Teardrop. A Prince Rupert’s Teardrop is made by dropping molten glass into cold water. It comes out in shape of a teardrop. The outside of the teardrop is incredibly hard, so it cannot be shattered, even with a hammer. However, if you break off the thinner part of the teardrop, the strongest part of the teardrop is broken and the entire teardrop crumbles like sand. It was a really cool demonstration.
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