Venetian Red, also called Mars Red, is a non-toxic iron oxide pigment used by dyers, painters and craftspersons since the early days of...

Lucrezia Borgia is an enigmatic figure of the Italian Renaissance (c. 1350 - 1550 AD). This period sees revival of art, culture and...

Powerful Medici, Borgia, Sforza, Gonzaga and Este families rise to prominence in the Renaissance. Behind the vast artistic innovations...

What exactly causes onions to make a person cry? The answer involves a combination of chemistry and enzymes. The trigger behind the tears...

The ancient Greek philosopher Empedocles of Sicily is an important figure in science and metaphysics. Based on Plato's work he...

Congelation is transformation of matter by freezing and crystallization. It's a straightforward process with many nuances. In spiritual...

The Philosophers' Stone or lapis philosophorum is a miraculous legendary substance. It holds secrets to an elixir of life, a cure for...

Salt is important from ancient to Renaissance alchemy, and still used today in alchemical projects, dyeing, cuisine and medicine. In...

Alchemy begins with several elements coming together at a crucial time in Alexandria, Egypt. As an international glass center, the city...

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

Copperas, iron(II) sulfate or green ferrous sulfate, is a versatile compound in various applications, from agriculture to water...

Dyers, coloring professionals, metal workers and gemologists seek vibrant colors and tones since early civilization. The first use of...

Hematite, an iron oxide mineral with the chemical formula Fe2O3, is prevalent around the world. Known for metallic luster and red earth...

Copperas, known chemically as ferrous sulfate (FeSO₄), has been a vital compound across various industries for centuries. Although...

Caput mortuum (Latin "dead head") is a purple hematite iron oxide pigment, used in oil paints and dyes. Due to cultural significance of...

Alchemy, a fusion of science, philosophy and mysticism, emerges in practice from the 1st century AD. Among the power civilizations of...

Women are second class citizens in ancient Rome, but a few bright stars shine through this mutable civilization. Renowned for art,...

The status and rights of women in ancient Rome are complex and evolve significantly over time. This societal structure is influenced by...

In 300 AD, the Roman Empire is falling apart. Under the rule of Emperor Diocletian, who wants to restore the grandeur of Rome, the empire...

The Ottoman-Venetian Wars are seven major conflicts between the Ottoman Empire and the Republic of Venice from the late 14th to the 18th...