Sylvia Rose
German Peasants' War: Rebellion of Despair
The German Peasants' War (1524-5) is short, bloody and violent, and changes the course of history in Europe. Up to 400,000 peasants rise...
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Sylvia Rose
4 days ago6 min read
Aristotle & Subjective Empiricism: Philosophy
Aristotle (384 - 322 BCE) is a Greek philosopher. His contributions span multiple disciplines such as biology, psychology, physics,...
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Sylvia Rose
Nov 155 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 146 min read
Diatoms: Glass-Making Algae Crucial to Life
Diatoms, while invisible to the naked eye, are essential to the ecosystem and human survival. These tiny microalgae prolifically generate...
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Sylvia Rose
Nov 134 min read
B. Linens Bacterium: Big Cheese of B.O.
Brevibacterium linens is a remarkable microorganism on a mission to spread its pungent aroma everywhere, from the unique bite of cheese...
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Sylvia Rose
Nov 136 min read
Pyrometallurgy: Ancient Processes of Modern Alchemy
Pyrometallurgy is the high-temperature processing of ores to extract and refine metals. It uses alchemical processes in a modern...
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Sylvia Rose
Nov 93 min read
Food Pathogens: Family Health & Safety
Pathogens of food include Bacillus cereus , Salmonella typhimurium , Aeromonas hydrophila , and Pseudomonas fragi . Each of these...
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Sylvia Rose
Nov 95 min read
Cornstarch: Cuisine, Beauty, Cleaning Uses
Cornstarch, also called corn flour, is a common ingredient worldwide. A fine, white powder derived from the endosperm of corn kernels,...
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Sylvia Rose
Nov 95 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 75 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 54 min read
Lye (NaOH): Caustic Soda for Soap & Glass
Lye or sodium hydroxide (NaOH) is a vital part of human history. Also called caustic soda, lye is a white odorless solid. A strong...
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Sylvia Rose
Nov 45 min read
Fungal Biofilms: Ecology of Biofilm-Producing Molds
Fungal biofilms are integral to ecosystems. Often unnoticed, these living structures exemplify microorganism cooperation in survival,...
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Sylvia Rose
Nov 46 min read
Glycerin (Glycerol): Darling of Cosmetics, Health & Science
Glycerin, also known as glycerol or glycerine, is a simple polyol compound with the chemical formula C3H8O3. This colorless, odorless,...
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Sylvia Rose
Nov 35 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 36 min read
Oil-Dwelling Microbes: Bacteria, Yeast, Fungi
Culinary oils are teeming with microbial life such as bacteria, yeast and fungi. Popular oils like olive oil, vegetable oil, almond oil,...
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Sylvia Rose
Nov 15 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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Sylvia Rose
Nov 18 min read
11 Favorite Drawing Mediums of Artists
Drawing is a creative expression for humans since cave paintings of prehistory. In art, anything making a mark is a drawing tool....
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Sylvia Rose
Nov 14 min read
Sanguine: Red Chalk of Renaissance Masters
Sanguine is a rich, reddish-brown chalk beloved by Renaissance artists such as Michelangelo. Creating flesh-like tones in the human form...
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Sylvia Rose
Nov 15 min read
Guar Gum: Unique Qualities for Art & Crafts
Guar gum is recognized for its unique natural properties in visual arts and crafting. From enhancing textures to creating custom paints,...
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Sylvia Rose
Oct 313 min read
Mosaic Gold: Alchemy of a Forgotten Art
Mosaic gold is also known to alchemists as aurum musivum or aurum mosaicum due to its mottled formation. Forgotten in the data fields...
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