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Sylvia Rose
Dec 13, 20245 min read
Chalk (CaCO3): Bounty of the Primal Seas
Chalk is fundamentally calcium carbonate (CaCO3) and takes hundreds of millions of years to form. This seemingly mundane mineral has a...
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Sylvia Rose
Dec 9, 20243 min read
Difference Between Gram-Positive & Gram-Negative Bacteria
Differences between Gram-negative and Gram-positive bacteria are fairly straightforward, related to cell membrane structure. Knowing...
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Sylvia Rose
Nov 28, 20246 min read
Cobalt (Co): The Little Goblin Who Could
Cobalt is a silvery grey metal used across various fields, including science, medicine, and industry. It receives its name from the...
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Sylvia Rose
Nov 27, 20246 min read
Zaffre: Vintage Cobalt Blue Glass & Artists' Pigment
Zaffre (zaffer) is a vibrant deep blue pigment developed by alchemists, major pigment creators, by c. 1550 AD. Characterized by brilliant...
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Sylvia Rose
Nov 24, 20244 min read
Glass of Antimony: Renaissance Purgatives
Glass of antimony , or vitrum antimonii , gives warm yellow or red hues. As Sb2O3, its use in alchemy is largely medicinal, one of many...
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Sylvia Rose
Nov 20, 20245 min read
Calcite: Metal-Eating Bacteria to Coral Reefs
Calcite is made up of calcium carbonate (CaCO3). With stunning crystal formations and a range of beautiful colors, calcite also has...
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Sylvia Rose
Nov 19, 20246 min read
Galen: Medical Methods of Ancient Physicians
Galen of Pergamon (c. 129 - 216 AD) is well known in the history of medicine. His extensive writings and theories prevail for over 2000...
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Sylvia Rose
Nov 18, 20247 min read
Mercury II Oxide: Red & White of Alchemy
In practical alchemy, mercury II oxide (HgO) is often called the "Red Precipitate," with its compound Mercuric Amidochloride (Hg(NH2)Cl),...
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Sylvia Rose
Nov 15, 20245 min read
Liver of Sulfur: Alchemy, Metal & Medicine
Liver of Sulfur is a unique compound of alchemy, metallurgy and medicine. Also known as hepar sulfuris or sulfurated potash, Liver of...
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Sylvia Rose
Nov 15, 20247 min read
How to Cultivate Green Algae for Science & Health
Green algae are simple life forms with amazing impact on the environments of Earth. Algae can be grown at home for microscopy, biology...
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Sylvia Rose
Nov 11, 20245 min read
Chalcopyrite (CuFeS₂): Shining Copper Ore
Chalcopyrite (CuFeS₂) is vital to the earth's geology. A primary ore of copper, this scintillating mineral is influential to health,...
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Sylvia Rose
Nov 11, 20246 min read
Copper (Cu) Effects on Human & Plant Health
Copper (Cu) and its warm golden red hue is part of humanity. It's one of the most important metals of alchemy , aids plant health and is...
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Sylvia Rose
Nov 9, 20243 min read
Iodine (I): Origin, Properties, Uses & Facts
Iodine (I) is an essential element in biology, industry, science and health. It's known for its intense violet gas and strong odor....
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Sylvia Rose
Nov 9, 20245 min read
Scheele's Green: History's Most Toxic Pigment
Scheele's Green is a rich, vibrant green. Its color appeal surpasses that of the copper carbonate paints of the late 18th century and...
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Sylvia Rose
Nov 8, 20245 min read
Carl Wilhelm Scheele: Poisonous Chemistry
Carl Wilhelm Scheele (1742 - 1786) is a self-taught German-Swedish chemist whose work has strong impact on chemical sciences of the day....
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Sylvia Rose
Nov 7, 20245 min read
Copper(II) Sulfate: Blue Vitriol, Chalcanthite
Copper (II) sulfate CuSO4 yields a vivid color and widespread applications. Also known as blue vitriol in alchemy and chalcanthite in...
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Sylvia Rose
Nov 3, 20245 min read
Iron(III) Oxide: Creation, Art & Science
Iron(III) oxide or ferric oxide (Fe2O3) yields a striking red color as a pigment, and has a wide range of uses. From industrial...
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Sylvia Rose
Nov 3, 20246 min read
Colorful World of Bacteria - Color Producers
Bacteria affect food, water, soil, human health and the vibrant colors of art. Here are six remarkable bacteria known for stunning...
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Sylvia Rose
Nov 2, 20245 min read
Metal Salts: Ancient History to Modern DIY
Metal salts are compounds created from metals and acids. In history and today they enjoy uses in beauty, natural health, chemical...
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Sylvia Rose
Nov 1, 20245 min read
Silverpoint Drawing: Art of the Renaissance
Silverpoint is a drawing medium with distinct artistic potential. This delicate and precise medium has a rich history, unique properties,...
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