Search Results: Paracelsus

Alchemy is an ancient practice aimed at recreating precious substances using recipes and transformative materials such as the philosopher's stone. Alchemists believed that materials like gold, silver, gems, and purple dye could be recreated...

The germ theory, which emerged in the late 19th century, demonstrated that microscopic germs caused most human infectious diseases. The germs involved included bacteria, viruses, fungi, protozoa, and prions. Louis Pasteur (1822-1895), a French...