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In the 17th century, there was a prince Rupert who liked to tease people with a tadpole-shaped glass product: the head was very hard and the hammer could not be broken; the tail was very fragile, and the whole piece of glass exploded when pinched. People call it Rupert's Tears. Rupert's tear is a structure with internal stress formed by dripping molten glass into water and rapidly cooling it. According to this principle, people have made particularly strong tempered glass. However, the edges of the tempered glass are impacted, or because of the nickel sulfide impurities inside, there is also a risk of self-detonation. People have made toughened laminated glass to further improve safety. The emergence of new technologies provides unlimited convenience for life.
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Video reference link:
• Mystery of Prince Rupe...
• .38 Special vs Prince ...
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