Born in Ireland in 1627, Robert Boyle plays a significant role in the 17th century "scientific revolution". His groundbreaking...

Distilling essential oil can be used for aromatherapy, in cuisine, beauty, healing or to set a mood. Here's the methodology to capture...

Fulminating silver is a term applicable to a number of silver base d explosives which "fulminate" or detonate easily and violently,...

Divine Water, oil of vitriol or sulfuric acid, scientifically denoted H₂SO₄, is commonly used in alchemy experiments. A mineral acid, it...

Sulfuric acid (H₂SO₄) is one of the most important chemicals in the world, with many uses from car battery production to fertilizer...

Herbal remedies are ubiquitous in medieval alchemy, a practice combining elements of science, spirituality, and mysticism. Recipes are...

Isaac Newton, English physicist and mathematician, has a deep interest in the occult. He writes of chronology, biblical interpretation...

Tin purification is important to various alchemical practices, and a fundamental step in many recipes and formulas. In alchemy purified...

Roger Bacon (c. 1219 - 1292) is a Franciscan friar and fiery figure in medieval and later science and philosophy. He's known for his...

Caterina Sforza (1463-1509) is a remarkable figure of the Italian Renaissance, leading a colorful and controversial life. Alchemy is...

Verdigris is the green rust or patina on copper, created as the metal reacts with oxygen in the environment. Copper corrodes green to...

Phosphorus is the first element not known since ancient times. This glowing substance is discovered by German alchemist Hennig Brand in...

Abundant in native form, sulfur (sulphur) is a mysterious and essential component of natural life. All living things contain sulfur. It...

Arsenic (As) has been called the King of Poisons and the Poison of Kings. This silvery metalloid appears abundantly in the Earth and...