The Alchemy of Color and Chemical Change in Medieval Manuscripts
Medieval experiments yielded vivid pigments like vermilion, mosaic gold, and verdigris—all found in these books.
Making Green: Tempera versus Oil
Pigments mixed with oil look glossy, whereas those mixed with egg yolk appear matte and flat even when layered.
Making Purple: The Science of Art
How can paint ingredients be identified? Scientists examine tiny samples and prepare pigments from old recipes.