Here's The Chemical Compound You Can Thank For Billiard Balls And False Teeth
Автор: Science Channel
Загружено: 2017-04-12
Просмотров: 120214
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Impossible Engineering | Thursdays at 9/8c
Billiard balls were originally made of ivory, but the endangerment of elephants led to the creation of a $10,000 prize to find an alternative material.
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