Black and White 5

Atelier médiéval avec moine enlumineur et commanditaire ecclésiastique négociant devant des pigments précieux et pots de lapis-lazuli

noir et blanc

How did ecclesiastical commissioners negotiate rates based on the number of colors used?

In medieval workshops, each color had its price. Ecclesiastical commissioners negotiated precisely the use of precious pigments such as lapis lazuli, more expensive than gold. These negotiations sh...

Nov 3, 2025

Walensky

noir et blanc

Comparaison visuelle des 500 nuances de gris perçues par l'œil humain versus 200 nuances de couleur

Why Does the Human Eye Detect 500 Shades of Gray But Only 200 Shades of Each Color?

Our eye captures 500 shades of gray thanks to 120 million rods, compared to only 200 variations per color with 6 million cones. This exceptional sensitivity explains the power of monochromatic inte...

Oct 27, 2025

Walensky

noir et blanc

Peinture en grisaille du XVIIe siècle, technique monochrome baroque en camaïeu de gris, style hollandais

What was the profitability of a painter specializing in grisaille compared to a generalist painter in the 17th century?

In the 17th century, painters specializing in grisaille had an hourly rate of profit that was 60 to 80% higher than generalists. Their monochrome works were sold for up to 200 guilders, compared to...

Oct 20, 2025

Walensky

noir et blanc

Photographie scientifique montrant contraste noir-blanc extrême versus transition douce, illustration médicale des déclencheurs de migraines ophtalmiques

How Can Extreme Black and White Contrasts Trigger Ophthalmic Migraines in Some Viewers?

Violent black-and-white contrasts can trigger migraines and visual disturbances in some sensitive individuals. Discover the neurological mechanisms at play and smart design strategies to appreciate...

Oct 14, 2025

Walensky