Fig. 7: Wrinkling and yield stress of paints.
From: A holistic view on the role of egg yolk in Old Masters’ oil paints
a Detail of Mary’s face displaying wrinkling of the flesh paint in Leonardo da Vinci’s Madonna of the Carnation, c. 1475, Inv. No. 7779, 62 × 48.5 cm, © Bavarian State Painting Collections, Munich, the whole painting is shown in Supplementary Fig. 22. b Photographs of LW paint surface structures after film formation (thickness = 1.0 mm) depending on pigment content φ and yield stress σy. CapS denotes capillary suspension and EY denotes egg yolk.
