1. Gunpowder
... mixture of saltpetre sulphur and charcoal, the three main ingredients of gunpowder in his book De Secretis. But it was not until 1267 that he specified a formula, in a letter to Pope Clement IV. This formula called exact mixtures of the three chemicals that when mixed correctly and lit would make a small explosion. At this point Bacon must have had knowledge of the ... ...
- Word Count: 1747
- Approx Pages: 7
- Grade Level: High School