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Rubber

SciShow Tangents

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The Secret Ingredient

The discover of rubber vulcanization in the 19th century had enormous impact on a number of industries. The first rubber condom was made in the 1850s with strips of raw rubber wrapped around molds. In 1912, a man named Julius Fromme came up with a better technique to make thinner condoms which involved dipping a glass mold into a liquid rubber solution. Animal intestines, gasoline, cotton, or cotton fibers?

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