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may 26, 1268 - Sir Roger Bacon

Description:

Cientista Sir Roger explica como inventaron el polvora y los ingredientes necesarios. ombinan salitre, azufre y carbón hasta que se convierte en polvo.

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ByViviana Escobedo
5 Feb 2018
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Date:

may 26, 1268
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~ 757 years ago
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